<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:60545cde-a1f4-40b2-8331-cbdefff2f842,g:fb409b69-9e7a-40cd-9e33-0081974a298e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.nninc.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncomeLoss" xlink:type="simple" xlink:href="nnbr-20241231.xsd#ConsolidatedStatementsofOperationsandComprehensiveIncomeLoss"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncomeLoss" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_d94606b9-d7f2-42f5-b12f-d0d0eda0e76c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2ff2a34d-268b-4185-9c7e-3bee15905075" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_d94606b9-d7f2-42f5-b12f-d0d0eda0e76c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2ff2a34d-268b-4185-9c7e-3bee15905075" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_941a43f9-dcf5-40cd-a980-42d6f51a9a63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_d94606b9-d7f2-42f5-b12f-d0d0eda0e76c" xlink:to="loc_us-gaap_NetIncomeLoss_941a43f9-dcf5-40cd-a980-42d6f51a9a63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_3ff7af43-e512-4e33-96ef-122a74f67723" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_e8878e50-ec8b-46b2-8a7d-26567cdf1aa4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_3ff7af43-e512-4e33-96ef-122a74f67723" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_e8878e50-ec8b-46b2-8a7d-26567cdf1aa4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_d29863e7-d00f-44d3-bf4e-314dd38aaa38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_3ff7af43-e512-4e33-96ef-122a74f67723" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_d29863e7-d00f-44d3-bf4e-314dd38aaa38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_82777848-8357-4a62-9d7e-2083107215ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_6d799c7c-e35c-4aea-84c5-e4b99cbb4532" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_82777848-8357-4a62-9d7e-2083107215ac" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_6d799c7c-e35c-4aea-84c5-e4b99cbb4532" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_946a3eb6-f948-479a-8f56-5a821cfbf76c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_82777848-8357-4a62-9d7e-2083107215ac" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_946a3eb6-f948-479a-8f56-5a821cfbf76c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3f0694ea-681e-436a-913e-ccfeec3adb99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_82777848-8357-4a62-9d7e-2083107215ac" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_3f0694ea-681e-436a-913e-ccfeec3adb99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_db4a6439-3ff7-4e20-b3af-d19fd95db812" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_82777848-8357-4a62-9d7e-2083107215ac" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_db4a6439-3ff7-4e20-b3af-d19fd95db812" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7a2d8c2a-2605-45fe-8c6b-84abe1600bc4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_f276cabc-64c9-4084-a7c7-c509f94c8163" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7a2d8c2a-2605-45fe-8c6b-84abe1600bc4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_f276cabc-64c9-4084-a7c7-c509f94c8163" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_eb8531fa-74c0-45ef-b0f7-3e898634cbb9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7a2d8c2a-2605-45fe-8c6b-84abe1600bc4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_eb8531fa-74c0-45ef-b0f7-3e898634cbb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_7d886ffb-a0ef-45d5-8382-71708bcf831d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7a2d8c2a-2605-45fe-8c6b-84abe1600bc4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_7d886ffb-a0ef-45d5-8382-71708bcf831d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_DerivativeInstrumentsPaymentExpense_4ece7311-c9c9-4b46-a9d0-a2047cc226ee" xlink:href="nnbr-20241231.xsd#nnbr_DerivativeInstrumentsPaymentExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_nnbr_DerivativeInstrumentsPaymentExpense_4ece7311-c9c9-4b46-a9d0-a2047cc226ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_1f83c10c-c614-49d8-afef-36fe58be08e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_1f83c10c-c614-49d8-afef-36fe58be08e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_cbdac33a-d171-4974-a4ff-404bd51a2070" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_us-gaap_OperatingIncomeLoss_cbdac33a-d171-4974-a4ff-404bd51a2070" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9212c9cc-d1d4-4186-a49a-eba99b30f306" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9212c9cc-d1d4-4186-a49a-eba99b30f306" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_fde73777-6ab3-40e7-bf95-07e85b45da1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_fde73777-6ab3-40e7-bf95-07e85b45da1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_d4ee58e2-d8a8-479a-9584-d5056e196851" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_31f7aa90-9f8d-4830-855b-83fce3805412" xlink:to="loc_us-gaap_InterestExpense_d4ee58e2-d8a8-479a-9584-d5056e196851" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_dd305cc8-9602-4035-82ad-ac1bdff389e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_dd305cc8-9602-4035-82ad-ac1bdff389e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_63d549af-f032-499f-ac15-1958a9b37341" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_63d549af-f032-499f-ac15-1958a9b37341" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_87dd2ed0-dfb8-4e91-bfbd-5d451823b8a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_87dd2ed0-dfb8-4e91-bfbd-5d451823b8a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_66e58e8a-4ddd-441c-b125-7b69739da486" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_66e58e8a-4ddd-441c-b125-7b69739da486" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_fef24fee-23ea-4195-802e-d820da6e6c2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b80f0403-a065-4a99-9ee6-250aae617f88" xlink:to="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_fef24fee-23ea-4195-802e-d820da6e6c2b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_eb54aef3-4794-451d-a10b-c40d7d05034d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_64fd2cbb-8c60-4d42-9684-c0a9cc209029" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_eb54aef3-4794-451d-a10b-c40d7d05034d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_64fd2cbb-8c60-4d42-9684-c0a9cc209029" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_a1eafc9d-1ee8-4eb2-b6e7-483a6b19550c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_eb54aef3-4794-451d-a10b-c40d7d05034d" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_a1eafc9d-1ee8-4eb2-b6e7-483a6b19550c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_b48fe8c7-41c6-4394-aeba-f1740fcf5de4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_eb54aef3-4794-451d-a10b-c40d7d05034d" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_b48fe8c7-41c6-4394-aeba-f1740fcf5de4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_8a0650fa-43f0-4ad6-9a25-8d358c4d3dde" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_60914f9a-24b1-4441-b0cf-a4810bdb2df6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_8a0650fa-43f0-4ad6-9a25-8d358c4d3dde" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_60914f9a-24b1-4441-b0cf-a4810bdb2df6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_87b8b101-94e4-432a-b299-56bac46e7977" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_8a0650fa-43f0-4ad6-9a25-8d358c4d3dde" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_87b8b101-94e4-432a-b299-56bac46e7977" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="nnbr-20241231.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_04751d6a-63fa-4589-acb6-35af0fe2c582" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_04751d6a-63fa-4589-acb6-35af0fe2c582" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_27bc72d9-bebc-4a67-a240-78e18413e592" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_OtherAssetsCurrent_27bc72d9-bebc-4a67-a240-78e18413e592" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_fc99e697-58ca-4be4-98b8-454a0ad7e4f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_IncomeTaxesReceivable_fc99e697-58ca-4be4-98b8-454a0ad7e4f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_51adfb01-46d0-4355-9b5a-a75f5988ae98" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_51adfb01-46d0-4355-9b5a-a75f5988ae98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_0750e249-5dfe-4a79-a5a9-ecc62af45faa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_0750e249-5dfe-4a79-a5a9-ecc62af45faa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_2dd9d14e-b436-487a-9e60-98db1ba61f45" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_InventoryNet_2dd9d14e-b436-487a-9e60-98db1ba61f45" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_e43198fa-93d2-4ae3-ac17-8abfd0987fc8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a3a8d088-3e2a-4abc-aa0d-f8bd792943c1" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_e43198fa-93d2-4ae3-ac17-8abfd0987fc8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_98cdf1df-de8b-475d-acdc-336b3b5e3391" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0680f3da-ad40-4b1a-9a4a-94bf981e62bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_98cdf1df-de8b-475d-acdc-336b3b5e3391" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0680f3da-ad40-4b1a-9a4a-94bf981e62bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_a2c2a4c7-7117-4f3a-a14e-b09a69af7e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_98cdf1df-de8b-475d-acdc-336b3b5e3391" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_a2c2a4c7-7117-4f3a-a14e-b09a69af7e3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_1d7b8390-42b8-4a84-94c2-3a1cfebf16da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_98cdf1df-de8b-475d-acdc-336b3b5e3391" xlink:to="loc_us-gaap_CommonStockValue_1d7b8390-42b8-4a84-94c2-3a1cfebf16da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_0d7d7469-d7d4-4f79-bdfc-5a0d0642fbf5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_98cdf1df-de8b-475d-acdc-336b3b5e3391" xlink:to="loc_us-gaap_AdditionalPaidInCapital_0d7d7469-d7d4-4f79-bdfc-5a0d0642fbf5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_50462b46-9a7c-4f17-8292-1b3c2bcd44b6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_LiabilitiesCurrent_50462b46-9a7c-4f17-8292-1b3c2bcd44b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_371e61bf-edbf-4a48-8f57-cc37c63c64ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_371e61bf-edbf-4a48-8f57-cc37c63c64ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_6209659f-6ba2-43f1-91cb-05259c13def9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_6209659f-6ba2-43f1-91cb-05259c13def9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_4c50939b-8421-4574-8ac7-0cba495f4143" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedIncomeTaxesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_4c50939b-8421-4574-8ac7-0cba495f4143" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_29710ca5-dcfb-43e9-b035-cfe4a7f93cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_29710ca5-dcfb-43e9-b035-cfe4a7f93cf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_aeb2698e-2439-4b96-a7e2-0bc859949838" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_aeb2698e-2439-4b96-a7e2-0bc859949838" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_03e5944e-6bdf-435b-a7dd-3fbe1c62f13c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_b79e0c3b-b9b7-4797-8a52-1c02c1c91f48" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_03e5944e-6bdf-435b-a7dd-3fbe1c62f13c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_feab83c1-43b7-4a87-9573-fe3d3900e8e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_305f72de-44a0-4502-8f13-afcfba61d3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_feab83c1-43b7-4a87-9573-fe3d3900e8e0" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_305f72de-44a0-4502-8f13-afcfba61d3d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_db3f31ef-be70-4e2e-a8a9-88256b7f8395" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_feab83c1-43b7-4a87-9573-fe3d3900e8e0" xlink:to="loc_us-gaap_CommitmentsAndContingencies_db3f31ef-be70-4e2e-a8a9-88256b7f8395" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_66eb46c5-56f9-4158-b67c-f1abe96cd9a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_feab83c1-43b7-4a87-9573-fe3d3900e8e0" xlink:to="loc_us-gaap_Liabilities_66eb46c5-56f9-4158-b67c-f1abe96cd9a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3e3c44d6-e7c0-420d-9f97-941a68229e85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_feab83c1-43b7-4a87-9573-fe3d3900e8e0" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3e3c44d6-e7c0-420d-9f97-941a68229e85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0fd5a86c-4e6c-4d68-b033-26646fbce756" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0fd5a86c-4e6c-4d68-b033-26646fbce756" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_f52b9c7c-5cb4-43d8-a408-719def15a764" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_f52b9c7c-5cb4-43d8-a408-719def15a764" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_5d6ba5ef-1327-4ab9-a740-6de4b364a713" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_5d6ba5ef-1327-4ab9-a740-6de4b364a713" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_0321c05e-4254-4725-8579-c4dde2fffc72" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_0321c05e-4254-4725-8579-c4dde2fffc72" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_2d190146-e2f7-45d8-8f50-6716bb1e8f76" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_AssetsCurrent_2d190146-e2f7-45d8-8f50-6716bb1e8f76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_9c153ccb-210d-4028-b555-a774e6187590" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_9c153ccb-210d-4028-b555-a774e6187590" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_3ef9e399-1a47-42cd-afc3-2b4706d8db0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityMethodInvestments"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_EquityMethodInvestments_3ef9e399-1a47-42cd-afc3-2b4706d8db0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_65f23200-02c7-4a26-8ac2-7475a433f13b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_895867f0-ac50-4de0-9c08-7f37537d3e8e" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_65f23200-02c7-4a26-8ac2-7475a433f13b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_34159f62-f749-4c39-82d3-0bd85451ca4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_34159f62-f749-4c39-82d3-0bd85451ca4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_d728c2a9-f9a9-4ca9-b947-888b47785b98" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_d728c2a9-f9a9-4ca9-b947-888b47785b98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_78918423-d2ba-40bb-a09b-d15046a69442" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_78918423-d2ba-40bb-a09b-d15046a69442" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_6615552b-1bb9-4cc6-b344-69d6cd412279" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_6615552b-1bb9-4cc6-b344-69d6cd412279" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_89cfcfd8-e99f-4974-aa80-73253e5e4e89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_AccountsPayableCurrent_89cfcfd8-e99f-4974-aa80-73253e5e4e89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_8b2c90dd-e33b-42b0-9899-0d3d6a2b15e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_LongTermDebtCurrent_8b2c90dd-e33b-42b0-9899-0d3d6a2b15e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_b7566882-4b45-4a26-9bb7-cec078eaef6e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_a48a2497-6402-4545-a75b-0b068880e831" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_b7566882-4b45-4a26-9bb7-cec078eaef6e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="nnbr-20241231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_eefa124c-969d-4720-9f99-71938f6428a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_eefa124c-969d-4720-9f99-71938f6428a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_593575b7-70e3-4e9e-9669-20dda4d9946e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_593575b7-70e3-4e9e-9669-20dda4d9946e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaidInKindInterest_6aaf280b-b93d-459f-9e10-25ee86c09cc3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaidInKindInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_PaidInKindInterest_6aaf280b-b93d-459f-9e10-25ee86c09cc3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_feb29588-03b9-4991-8995-dbfe0f79a85a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_feb29588-03b9-4991-8995-dbfe0f79a85a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_ae9b5ed3-e05f-4eac-8d3e-f3755d127a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_ae9b5ed3-e05f-4eac-8d3e-f3755d127a1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_06eff408-6032-4bf7-81f2-a756a428ea13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_06eff408-6032-4bf7-81f2-a756a428ea13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_8e5a5fde-d1d0-4996-a2fe-697b5ab29280" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_ProfitLoss_8e5a5fde-d1d0-4996-a2fe-697b5ab29280" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_394b9996-81e9-4b7e-ad09-9bac3ee59fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_394b9996-81e9-4b7e-ad09-9bac3ee59fc6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_1508c6b6-2730-4589-be36-ab39ea85f913" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_1508c6b6-2730-4589-be36-ab39ea85f913" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_fa491a8f-f93e-424a-8a05-26028898df1a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_fa491a8f-f93e-424a-8a05-26028898df1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet_771deb39-bc54-488c-9c87-55b65c161753" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet_771deb39-bc54-488c-9c87-55b65c161753" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_3f6a4511-64dc-4f8c-bd3e-19bfb93b96b8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_3f6a4511-64dc-4f8c-bd3e-19bfb93b96b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_c3b3a5fb-b778-4b95-a266-9ef8160cc410" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_c3b3a5fb-b778-4b95-a266-9ef8160cc410" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_56691a62-980d-4b02-8b98-de07e5e33de8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_56691a62-980d-4b02-8b98-de07e5e33de8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_2d1f7e87-ac52-4f58-ac1d-09108ffe4645" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_2d1f7e87-ac52-4f58-ac1d-09108ffe4645" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_80cc08f7-b0e2-4730-a346-5e05cc5b7fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_80cc08f7-b0e2-4730-a346-5e05cc5b7fdd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_785a6a9f-8d50-4b5d-a88e-38b2ce7c21d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_ShareBasedCompensation_785a6a9f-8d50-4b5d-a88e-38b2ce7c21d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_6723bbc6-f783-43af-9a4f-9bed27779371" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="18" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1c2df6d3-8aab-4af2-b6c9-91f436a07c07" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_6723bbc6-f783-43af-9a4f-9bed27779371" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_d46bd29d-c769-41f5-b291-3d6eca362e05" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_d46bd29d-c769-41f5-b291-3d6eca362e05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2a5a08af-d9a3-4d35-b03b-9bb5c26a45f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_2a5a08af-d9a3-4d35-b03b-9bb5c26a45f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_RepaymentsOfFinancingObligations_22c294cf-1750-46cc-88cb-01de2c6c0fcf" xlink:href="nnbr-20241231.xsd#nnbr_RepaymentsOfFinancingObligations"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_nnbr_RepaymentsOfFinancingObligations_22c294cf-1750-46cc-88cb-01de2c6c0fcf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_ProceedsFromFailedSaleLeasebackOfEquipment_9283689c-15f6-4cc8-8330-bccf4df68eea" xlink:href="nnbr-20241231.xsd#nnbr_ProceedsFromFailedSaleLeasebackOfEquipment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_nnbr_ProceedsFromFailedSaleLeasebackOfEquipment_9283689c-15f6-4cc8-8330-bccf4df68eea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_9159b433-a6b2-461e-b6d1-fa09ce68ec1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_PaymentsOfDividends_9159b433-a6b2-461e-b6d1-fa09ce68ec1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_2862be48-6a1b-4a88-ae60-ad417805b773" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_2862be48-6a1b-4a88-ae60-ad417805b773" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_PaymentsofDebtIssuanceCostsandPrepaymentCosts_6f835e54-8786-42b4-b9b9-f47db4f1b621" xlink:href="nnbr-20241231.xsd#nnbr_PaymentsofDebtIssuanceCostsandPrepaymentCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_nnbr_PaymentsofDebtIssuanceCostsandPrepaymentCosts_6f835e54-8786-42b4-b9b9-f47db4f1b621" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_dd4f0fbe-b55b-47c6-96e5-18e9a89d1a48" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_dd4f0fbe-b55b-47c6-96e5-18e9a89d1a48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_PaymentsForTemporaryEquityRedemption_98fbf840-0bf5-47e2-9e04-9b06f51e41ff" xlink:href="nnbr-20241231.xsd#nnbr_PaymentsForTemporaryEquityRedemption"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_nnbr_PaymentsForTemporaryEquityRedemption_98fbf840-0bf5-47e2-9e04-9b06f51e41ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings_d48259c1-7635-4ac3-a588-972462d98ee8" xlink:href="nnbr-20241231.xsd#nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings_d48259c1-7635-4ac3-a588-972462d98ee8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_70bf766a-6f71-4542-b054-f652265669a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13d21e1-5b3f-4b23-a893-d6549b8038b5" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_70bf766a-6f71-4542-b054-f652265669a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForHedgeInvestingActivities_c0f63002-c654-472c-87c9-9743ba33cf20" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForHedgeInvestingActivities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:to="loc_us-gaap_PaymentsForHedgeInvestingActivities_c0f63002-c654-472c-87c9-9743ba33cf20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_bf126c74-7056-4183-b023-a64a2813e550" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_bf126c74-7056-4183-b023-a64a2813e550" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_4b7bbcfe-1d9d-4283-8525-b30f58495b43" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_4b7bbcfe-1d9d-4283-8525-b30f58495b43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_021ff0e9-56bf-4847-81b3-5b69a390fe0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_021ff0e9-56bf-4847-81b3-5b69a390fe0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_211cb8cf-f034-4da3-b30b-b45f0d9c8cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ab9f6941-93a5-4072-8d70-5990805c489e" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_211cb8cf-f034-4da3-b30b-b45f0d9c8cf3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d522c865-4716-4580-929c-358815842b58" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_71723084-d8f8-4ea3-8edd-8f6724347de5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d522c865-4716-4580-929c-358815842b58" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_71723084-d8f8-4ea3-8edd-8f6724347de5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d33060e0-6313-468d-b878-b25d211aedfa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d522c865-4716-4580-929c-358815842b58" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d33060e0-6313-468d-b878-b25d211aedfa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b9e5fd6a-6826-4fe2-851f-71ddc4c0623a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d522c865-4716-4580-929c-358815842b58" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b9e5fd6a-6826-4fe2-851f-71ddc4c0623a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_509c0b7d-552a-4680-90ee-fc44397e07ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d522c865-4716-4580-929c-358815842b58" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_509c0b7d-552a-4680-90ee-fc44397e07ce" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/InventoriesSummaryofInventoriesDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#InventoriesSummaryofInventoriesDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/InventoriesSummaryofInventoriesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_2636ab47-b415-44ad-9138-f51d15322bc7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_f6d17a8f-d09b-4ea0-96d0-dcb7ef3b092f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_2636ab47-b415-44ad-9138-f51d15322bc7" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_f6d17a8f-d09b-4ea0-96d0-dcb7ef3b092f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_2a908a97-f0b8-4f7c-a8ad-2f4f3568ed7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_2636ab47-b415-44ad-9138-f51d15322bc7" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_2a908a97-f0b8-4f7c-a8ad-2f4f3568ed7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_e884a9d3-1d19-4b41-89d2-59fa4b5202d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_2636ab47-b415-44ad-9138-f51d15322bc7" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_e884a9d3-1d19-4b41-89d2-59fa4b5202d2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/PropertyPlantandEquipmentSummaryofPropertyPlantandEquipmentDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#PropertyPlantandEquipmentSummaryofPropertyPlantandEquipmentDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/PropertyPlantandEquipmentSummaryofPropertyPlantandEquipmentDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_401fefd1-9a75-45a3-bc27-d8d45ac059d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_231cd860-19cd-476a-86ea-b8a04f7e7407" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_401fefd1-9a75-45a3-bc27-d8d45ac059d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_231cd860-19cd-476a-86ea-b8a04f7e7407" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_62964aa7-5480-492f-987d-9bb41738ee3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_401fefd1-9a75-45a3-bc27-d8d45ac059d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_62964aa7-5480-492f-987d-9bb41738ee3c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/IntangibleAssetsNetSummaryofCarryingAmountofIntangibleAssetsbyMajorAssetClassDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#IntangibleAssetsNetSummaryofCarryingAmountofIntangibleAssetsbyMajorAssetClassDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/IntangibleAssetsNetSummaryofCarryingAmountofIntangibleAssetsbyMajorAssetClassDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1efede12-602d-42bd-8ee3-2ed2195ae52d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ea132733-84b6-49f2-91ec-03fde611d7c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1efede12-602d-42bd-8ee3-2ed2195ae52d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ea132733-84b6-49f2-91ec-03fde611d7c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_4494e21c-3e68-4241-a22c-cfaeae77692e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1efede12-602d-42bd-8ee3-2ed2195ae52d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_4494e21c-3e68-4241-a22c-cfaeae77692e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/LeasesFinanceandOperatingLeaseCostDetails" xlink:type="simple" xlink:href="nnbr-20241231.xsd#LeasesFinanceandOperatingLeaseCostDetails"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/LeasesFinanceandOperatingLeaseCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_bb2bc325-553a-43ec-808b-cf97f19d4b60" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_bb2bc325-553a-43ec-808b-cf97f19d4b60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_42ccee86-65e9-4a15-ac4f-5fbbb41605b6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseInterestExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_42ccee86-65e9-4a15-ac4f-5fbbb41605b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_7071fc6c-954b-4194-a18f-98c2cc2a5101" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_OperatingLeaseCost_7071fc6c-954b-4194-a18f-98c2cc2a5101" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_bdb5b48e-a547-47b5-97d8-df9013ea5f56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_ShortTermLeaseCost_bdb5b48e-a547-47b5-97d8-df9013ea5f56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_b84f45b2-7f81-4a12-a0b7-9c1e8943efa3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_VariableLeaseCost_b84f45b2-7f81-4a12-a0b7-9c1e8943efa3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_1000551b-a74d-4055-964f-a657f6722868" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_4137b381-5b31-4878-8f28-b48c1fa27850" xlink:to="loc_us-gaap_SubleaseIncome_1000551b-a74d-4055-964f-a657f6722868" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_LeaseRightOfUseAsset_ef1d9f02-4033-49f6-aabd-dd3e6c843c47" xlink:href="nnbr-20241231.xsd#nnbr_LeaseRightOfUseAsset"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_c8671865-5406-4c0f-af67-53a6cda0e5db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseRightOfUseAsset_ef1d9f02-4033-49f6-aabd-dd3e6c843c47" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_c8671865-5406-4c0f-af67-53a6cda0e5db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_71634bb9-0dc4-4034-a7ae-7f63eca2dd7e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseRightOfUseAsset_ef1d9f02-4033-49f6-aabd-dd3e6c843c47" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_71634bb9-0dc4-4034-a7ae-7f63eca2dd7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_LeaseLiability_ae0ea1ff-e8a5-438a-839b-817550747c0f" xlink:href="nnbr-20241231.xsd#nnbr_LeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_e22cda15-f30e-4dd1-a739-da4094f06299" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseLiability_ae0ea1ff-e8a5-438a-839b-817550747c0f" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_e22cda15-f30e-4dd1-a739-da4094f06299" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_451c0c33-5a51-4977-8770-884df2a8cd2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseLiability_ae0ea1ff-e8a5-438a-839b-817550747c0f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_451c0c33-5a51-4977-8770-884df2a8cd2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_f5cf4af0-2df4-4b0f-b738-f2c3696bcac7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseLiability_ae0ea1ff-e8a5-438a-839b-817550747c0f" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_f5cf4af0-2df4-4b0f-b738-f2c3696bcac7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_4b46675f-8934-4232-978e-45f18a7833c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_nnbr_LeaseLiability_ae0ea1ff-e8a5-438a-839b-817550747c0f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_4b46675f-8934-4232-978e-45f18a7833c5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/LeasesFutureMinimumLeaseObligationsDetails" xlink:type="simple" xlink:href="nnbr-20241231.xsd#LeasesFutureMinimumLeaseObligationsDetails"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/LeasesFutureMinimumLeaseObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_c2487b25-29e9-4bf4-9a27-4013917d22b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_c2487b25-29e9-4bf4-9a27-4013917d22b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_e3717050-ae62-411a-8b06-6a1ea365208f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_e3717050-ae62-411a-8b06-6a1ea365208f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_ac2b6a29-80fb-4c35-9e7c-b8065ff6d35b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_ac2b6a29-80fb-4c35-9e7c-b8065ff6d35b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_a7cfa29d-caa2-4898-8d3d-84866db9f391" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_a7cfa29d-caa2-4898-8d3d-84866db9f391" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8e2b013a-74e7-40de-b006-97474ebce40c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8e2b013a-74e7-40de-b006-97474ebce40c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6db1209c-7279-4718-9347-b2ddc1ebab1b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6e21cd29-0504-4e02-8866-54e9442f4af5" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6db1209c-7279-4718-9347-b2ddc1ebab1b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_8c196ed6-acc3-4124-9843-3b994b634175" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_6be4e225-3982-434d-bf12-37623cfe1021" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_8c196ed6-acc3-4124-9843-3b994b634175" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_6be4e225-3982-434d-bf12-37623cfe1021" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_0ed4613a-b494-4d45-a71b-84074a91f215" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_8c196ed6-acc3-4124-9843-3b994b634175" xlink:to="loc_us-gaap_FinanceLeaseLiability_0ed4613a-b494-4d45-a71b-84074a91f215" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/LeasesFutureMinimumLeaseObligationsDetails_1" xlink:type="simple" xlink:href="nnbr-20241231.xsd#LeasesFutureMinimumLeaseObligationsDetails_1"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/LeasesFutureMinimumLeaseObligationsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_bd86ce5b-555b-4578-a27f-ed694c1509f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9edaa421-8a33-4353-be35-f295c781eb25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_bd86ce5b-555b-4578-a27f-ed694c1509f9" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9edaa421-8a33-4353-be35-f295c781eb25" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_803db361-a481-4689-9792-37e2bcb144ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_bd86ce5b-555b-4578-a27f-ed694c1509f9" xlink:to="loc_us-gaap_OperatingLeaseLiability_803db361-a481-4689-9792-37e2bcb144ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_3cf374bc-ed8b-49ed-94c1-63407bfd9e43" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_3cf374bc-ed8b-49ed-94c1-63407bfd9e43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_bb0348d4-40f6-463d-897e-c7d40e7a44af" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_bb0348d4-40f6-463d-897e-c7d40e7a44af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_46eb50a8-8fa6-444b-9fea-b27a5e713802" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_46eb50a8-8fa6-444b-9fea-b27a5e713802" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_c5b36640-7108-4422-b86d-ac7f025fdd52" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_c5b36640-7108-4422-b86d-ac7f025fdd52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_851a2109-7ecb-446e-ad7d-70ae223e10a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_851a2109-7ecb-446e-ad7d-70ae223e10a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_a3e4704b-1e5d-4730-9d34-be00c0d4c98a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_c875281b-5030-4576-ba1f-895ccc7db0b1" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_a3e4704b-1e5d-4730-9d34-be00c0d4c98a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/IncomeTaxesLossfromContinuingOperationsBeforeBenefitforIncomeTaxesDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#IncomeTaxesLossfromContinuingOperationsBeforeBenefitforIncomeTaxesDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/IncomeTaxesLossfromContinuingOperationsBeforeBenefitforIncomeTaxesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_cdab15f5-c34b-4001-b215-1a873eaa3273" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_ccf42ab9-b4ba-447a-86b8-b029c3038e5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_cdab15f5-c34b-4001-b215-1a873eaa3273" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_ccf42ab9-b4ba-447a-86b8-b029c3038e5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_f2bd63aa-b2fc-4cdb-b070-b03d00d22c32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_cdab15f5-c34b-4001-b215-1a873eaa3273" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_f2bd63aa-b2fc-4cdb-b070-b03d00d22c32" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#IncomeTaxesIncomeTaxExpenseBenefitDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e8ec7a67-636f-46c8-ae8f-c08151b00850" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_a4115511-f0ed-4bc6-82f3-6c9961e6322d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e8ec7a67-636f-46c8-ae8f-c08151b00850" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_a4115511-f0ed-4bc6-82f3-6c9961e6322d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_dac80fc9-bd28-430c-9da7-0edc204f7615" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e8ec7a67-636f-46c8-ae8f-c08151b00850" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_dac80fc9-bd28-430c-9da7-0edc204f7615" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_DeferredFederalAndForeignIncomeTaxExpenseBenefitValuationAllowance_190ff4c7-a796-4b5e-9899-c37205b45661" xlink:href="nnbr-20241231.xsd#nnbr_DeferredFederalAndForeignIncomeTaxExpenseBenefitValuationAllowance"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e8ec7a67-636f-46c8-ae8f-c08151b00850" xlink:to="loc_nnbr_DeferredFederalAndForeignIncomeTaxExpenseBenefitValuationAllowance_190ff4c7-a796-4b5e-9899-c37205b45661" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_cb44cdb6-1c52-474b-a73d-41d5bf3a69ab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e8ec7a67-636f-46c8-ae8f-c08151b00850" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_cb44cdb6-1c52-474b-a73d-41d5bf3a69ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b6770936-57ed-4091-8141-b57906a8ac4e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_6aa353bc-f955-42fe-bc5d-62fb1d1dc49e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b6770936-57ed-4091-8141-b57906a8ac4e" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_6aa353bc-f955-42fe-bc5d-62fb1d1dc49e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_5f1c00a5-2cbb-4356-b1cc-534f64cd245d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b6770936-57ed-4091-8141-b57906a8ac4e" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_5f1c00a5-2cbb-4356-b1cc-534f64cd245d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_4ed65663-7e8a-48be-ba31-f804fdd18ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b6770936-57ed-4091-8141-b57906a8ac4e" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_4ed65663-7e8a-48be-ba31-f804fdd18ac3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_569657de-cff7-4c3b-8ef7-b11b13dd562d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_e46a0f72-ae0f-4dc5-989a-6a666af66a91" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_569657de-cff7-4c3b-8ef7-b11b13dd562d" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_e46a0f72-ae0f-4dc5-989a-6a666af66a91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_cb93ac75-d72f-4fd3-90b4-75e34a4d9668" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_569657de-cff7-4c3b-8ef7-b11b13dd562d" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_cb93ac75-d72f-4fd3-90b4-75e34a4d9668" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/IncomeTaxesReconciliationofIncomeTaxesBasedonUSFederalStatutoryRateDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#IncomeTaxesReconciliationofIncomeTaxesBasedonUSFederalStatutoryRateDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/IncomeTaxesReconciliationofIncomeTaxesBasedonUSFederalStatutoryRateDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings_6b49366c-c86c-4349-9761-70a8cd1838e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings_6b49366c-c86c-4349-9761-70a8cd1838e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_EffectiveIncomeTaxRateReconciliationWarrantRevaluation_a9d152cc-fc0d-4d06-855a-b506ce807e2f" xlink:href="nnbr-20241231.xsd#nnbr_EffectiveIncomeTaxRateReconciliationWarrantRevaluation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_nnbr_EffectiveIncomeTaxRateReconciliationWarrantRevaluation_a9d152cc-fc0d-4d06-855a-b506ce807e2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_e7d15e7f-93b8-4465-8cf3-39ea7d9139b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_e7d15e7f-93b8-4465-8cf3-39ea7d9139b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_fbfdd2ca-cbbf-4809-977d-85a0c08c3923" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_fbfdd2ca-cbbf-4809-977d-85a0c08c3923" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_910b2fbd-88bb-4bd7-be00-c2c80b21ae5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_910b2fbd-88bb-4bd7-be00-c2c80b21ae5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_6c497f66-0486-4ffb-acba-c067c9461604" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_6c497f66-0486-4ffb-acba-c067c9461604" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductions_dc82e085-b711-4c05-9017-7797d52c2380" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationDeductions"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductions_dc82e085-b711-4c05-9017-7797d52c2380" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_EffectiveIncomeTaxRateReconciliationIntercompanyLendingPercent_456af8f0-46aa-4af8-a6e2-e504a2cb35ec" xlink:href="nnbr-20241231.xsd#nnbr_EffectiveIncomeTaxRateReconciliationIntercompanyLendingPercent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_nnbr_EffectiveIncomeTaxRateReconciliationIntercompanyLendingPercent_456af8f0-46aa-4af8-a6e2-e504a2cb35ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent_90be283c-d05c-4944-926d-782ba96e9a37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent_90be283c-d05c-4944-926d-782ba96e9a37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_6cb42048-9a7b-4b8b-bc7f-ebd0a38a9298" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes_6cb42048-9a7b-4b8b-bc7f-ebd0a38a9298" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies_a6ccece5-35ac-455b-ad1a-4c1209ecfc89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies_a6ccece5-35ac-455b-ad1a-4c1209ecfc89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_6c89da9a-558d-49bf-abd2-c82c3acc9493" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_6c89da9a-558d-49bf-abd2-c82c3acc9493" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges_d7a63edd-debc-4785-951b-3fbc89a59baf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges_d7a63edd-debc-4785-951b-3fbc89a59baf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_f105a66a-0961-40c0-89ef-e6e6b28dc391" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_f105a66a-0961-40c0-89ef-e6e6b28dc391" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_61da2df8-23ab-41f7-ba51-09c52009e9df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_61da2df8-23ab-41f7-ba51-09c52009e9df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign_a8c412ed-5a56-464a-96a8-d02e061b7ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign_a8c412ed-5a56-464a-96a8-d02e061b7ed3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness_47e71fd2-ef65-415d-b0a1-49e1ea63785f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness_47e71fd2-ef65-415d-b0a1-49e1ea63785f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_EffectiveIncomeTaxRateReconciliationReturntoProvision_250a77f5-5ff8-4ad1-907d-7814974b60fa" xlink:href="nnbr-20241231.xsd#nnbr_EffectiveIncomeTaxRateReconciliationReturntoProvision"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_nnbr_EffectiveIncomeTaxRateReconciliationReturntoProvision_250a77f5-5ff8-4ad1-907d-7814974b60fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_287568c8-d9cd-43a1-852e-d2da5867d60a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_287568c8-d9cd-43a1-852e-d2da5867d60a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_EffectiveIncomeTaxRateReconciliationDeferredTrueUpPercent_eeeeac12-495f-4821-a10c-6380e963b6ad" xlink:href="nnbr-20241231.xsd#nnbr_EffectiveIncomeTaxRateReconciliationDeferredTrueUpPercent"/>
    <link:calculationArc order="20" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_nnbr_EffectiveIncomeTaxRateReconciliationDeferredTrueUpPercent_eeeeac12-495f-4821-a10c-6380e963b6ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_EffectiveIncomeTaxRateReconciliationInterestOnCARESActRefund_c4c640ed-3439-40c6-9f30-e85a12093404" xlink:href="nnbr-20241231.xsd#nnbr_EffectiveIncomeTaxRateReconciliationInterestOnCARESActRefund"/>
    <link:calculationArc order="21" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_964fb2cc-1c8d-4048-a264-7349155286da" xlink:to="loc_nnbr_EffectiveIncomeTaxRateReconciliationInterestOnCARESActRefund_c4c640ed-3439-40c6-9f30-e85a12093404" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/IncomeTaxesPrincipalComponentsofDeferredTaxAssetsandLiabilitiesDetail" xlink:type="simple" xlink:href="nnbr-20241231.xsd#IncomeTaxesPrincipalComponentsofDeferredTaxAssetsandLiabilitiesDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/IncomeTaxesPrincipalComponentsofDeferredTaxAssetsandLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_a4333d63-5d83-49df-951f-e11eec5b4e3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_b6bed822-bcaa-458f-85b4-10a37f7f742a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_a4333d63-5d83-49df-951f-e11eec5b4e3c" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_b6bed822-bcaa-458f-85b4-10a37f7f742a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_d936d63a-1f28-45d7-b4ef-1a69f241499c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_a4333d63-5d83-49df-951f-e11eec5b4e3c" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_d936d63a-1f28-45d7-b4ef-1a69f241499c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_ed15d06b-4380-4f98-a4f1-1852f4564723" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesDerivatives"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_ed15d06b-4380-4f98-a4f1-1852f4564723" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_d01f3394-83b4-409f-8f16-308d8bf8db0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesOther"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_d01f3394-83b4-409f-8f16-308d8bf8db0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings_2825e89f-314f-4b28-bef5-5af5691c90e6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings_2825e89f-314f-4b28-bef5-5af5691c90e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_63b225c0-b5ba-4e01-bfba-7efea06c4ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_63b225c0-b5ba-4e01-bfba-7efea06c4ee0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_1e408eaf-d6f3-4d71-a627-4e455cf47f6b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_1e408eaf-d6f3-4d71-a627-4e455cf47f6b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_b5287e22-bba5-47a3-a10e-aa9545a60ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_68d7e3e5-c73b-4637-bae7-728d23801051" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_b5287e22-bba5-47a3-a10e-aa9545a60ca3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_8a972c90-ff52-419f-b238-457722c87aad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_06098f2f-64e4-4418-bef9-4a3f929e080e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_8a972c90-ff52-419f-b238-457722c87aad" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_06098f2f-64e4-4418-bef9-4a3f929e080e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_102205fc-0162-4a99-9cf1-e9e6c20f3160" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_8a972c90-ff52-419f-b238-457722c87aad" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_102205fc-0162-4a99-9cf1-e9e6c20f3160" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets_4de73951-d2a1-4aed-a6ac-e5c7e044538b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets_4de73951-d2a1-4aed-a6ac-e5c7e044538b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOtherLossCarryforwards_2765b669-c99f-46e6-9e4f-7e9d3188bb06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOtherLossCarryforwards"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsOtherLossCarryforwards_2765b669-c99f-46e6-9e4f-7e9d3188bb06" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInventory_58c9e835-0b96-4f7e-98b1-a4e3e5967a65" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsInventory"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsInventory_58c9e835-0b96-4f7e-98b1-a4e3e5967a65" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves_598d375d-8fdd-4fca-9db1-479053873478" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves_598d375d-8fdd-4fca-9db1-479053873478" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_DeferredTaxAssetOperatingLeaseRightOfUseAssets_db5e81a8-3070-4b8d-a9e6-8408ce926d57" xlink:href="nnbr-20241231.xsd#nnbr_DeferredTaxAssetOperatingLeaseRightOfUseAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_nnbr_DeferredTaxAssetOperatingLeaseRightOfUseAssets_db5e81a8-3070-4b8d-a9e6-8408ce926d57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_dc047e84-33b2-4a14-928c-a0d5ebe8c1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_dc047e84-33b2-4a14-928c-a0d5ebe8c1a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_2dcab815-4094-4f12-bbef-c1396e90e6f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_2dcab815-4094-4f12-bbef-c1396e90e6f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch_4c4e4f27-86d1-4c23-bf65-313ad5263eca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch_4c4e4f27-86d1-4c23-bf65-313ad5263eca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_f0deff0d-fe09-45ee-a48f-116f9d938c00" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_f0deff0d-fe09-45ee-a48f-116f9d938c00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_349cf13a-57e2-4d5c-9cea-b457d626426c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsDerivativeInstruments"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_349cf13a-57e2-4d5c-9cea-b457d626426c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_888b137f-3b75-47c2-aab6-ec8758d38624" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_888b137f-3b75-47c2-aab6-ec8758d38624" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_DeferredTaxAssetInterestExpenseLimitation_3b9d679b-b047-43a3-bb94-58afd93491a8" xlink:href="nnbr-20241231.xsd#nnbr_DeferredTaxAssetInterestExpenseLimitation"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_nnbr_DeferredTaxAssetInterestExpenseLimitation_3b9d679b-b047-43a3-bb94-58afd93491a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment_135a2583-b5d5-4438-be26-247b3d297c13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_9492c869-750b-4424-919a-cfaecce046c2" xlink:to="loc_us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment_135a2583-b5d5-4438-be26-247b3d297c13" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/NetIncomeLossPerShareNetIncomeLossPerShareSummaryofNetIncomeLossPerShareDetails" xlink:type="simple" xlink:href="nnbr-20241231.xsd#NetIncomeLossPerShareNetIncomeLossPerShareSummaryofNetIncomeLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/NetIncomeLossPerShareNetIncomeLossPerShareSummaryofNetIncomeLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_d3a7f9eb-1b20-4e87-ae2b-85752e5b8b63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_efc069fe-c595-4aeb-a50a-ff935a7561cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_d3a7f9eb-1b20-4e87-ae2b-85752e5b8b63" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_efc069fe-c595-4aeb-a50a-ff935a7561cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_5b5918eb-b8b9-4ed2-be69-4999e003a7c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_d3a7f9eb-1b20-4e87-ae2b-85752e5b8b63" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_5b5918eb-b8b9-4ed2-be69-4999e003a7c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_ac9e8630-de16-479b-a91f-3a8379aa7e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_f5f04b57-961e-487c-9595-97e82f37760e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_ac9e8630-de16-479b-a91f-3a8379aa7e1b" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_f5f04b57-961e-487c-9595-97e82f37760e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_60c07d38-13ef-4845-84ec-4e947fbec549" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_ac9e8630-de16-479b-a91f-3a8379aa7e1b" xlink:to="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_60c07d38-13ef-4845-84ec-4e947fbec549" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8595ef60-8a3e-4e68-b6e3-9f4a7637f40e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted_c5cb1088-5da7-43dd-91d2-b2c2ccb845d6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8595ef60-8a3e-4e68-b6e3-9f4a7637f40e" xlink:to="loc_us-gaap_NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted_c5cb1088-5da7-43dd-91d2-b2c2ccb845d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted_5e92ebf6-b317-42c9-8138-862fbc230ffc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_8595ef60-8a3e-4e68-b6e3-9f4a7637f40e" xlink:to="loc_us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted_5e92ebf6-b317-42c9-8138-862fbc230ffc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_93f56693-cf37-481a-9549-1dbb01472943" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_55fc0b68-ed6b-4802-b6a6-311fb8001955" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_93f56693-cf37-481a-9549-1dbb01472943" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_55fc0b68-ed6b-4802-b6a6-311fb8001955" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_7f566478-6522-439c-921a-a69939f73812" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_93f56693-cf37-481a-9549-1dbb01472943" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_7f566478-6522-439c-921a-a69939f73812" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/AccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="nnbr-20241231.xsd#AccumulatedOtherComprehensiveIncomeDetails"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/AccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_c888bb73-a1d6-4efb-b358-b3d86dd5fde4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax_5520b035-05bc-44c5-8108-9cfed77d5860" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_c888bb73-a1d6-4efb-b358-b3d86dd5fde4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax_5520b035-05bc-44c5-8108-9cfed77d5860" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_e59ff1c4-b751-43d0-9081-4bec217cb980" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_c888bb73-a1d6-4efb-b358-b3d86dd5fde4" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_e59ff1c4-b751-43d0-9081-4bec217cb980" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_365a9fed-3522-49ed-bb5a-2af0af448798" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_c888bb73-a1d6-4efb-b358-b3d86dd5fde4" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_365a9fed-3522-49ed-bb5a-2af0af448798" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_4da45de0-5940-4495-8d83-f5ce0979ad46" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_1fdc1093-5930-4d0b-9496-d5937d7e1a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_4da45de0-5940-4495-8d83-f5ce0979ad46" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_1fdc1093-5930-4d0b-9496-d5937d7e1a4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_78578454-2f04-46dc-8fae-0057e2d0e4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_4da45de0-5940-4495-8d83-f5ce0979ad46" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_78578454-2f04-46dc-8fae-0057e2d0e4d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_cde041b9-974e-46e6-acba-01a33c21387a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_4da45de0-5940-4495-8d83-f5ce0979ad46" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax_cde041b9-974e-46e6-acba-01a33c21387a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonaRecurringBasisDetails" xlink:type="simple" xlink:href="nnbr-20241231.xsd#FairValueMeasurementsAssetsandLiabilitiesMeasuredonaRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonaRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9c5a801f-e73f-47c9-bc59-d942d0f0e8c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8dd1469f-7941-4fd2-a7eb-0a4861cd9dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9c5a801f-e73f-47c9-bc59-d942d0f0e8c1" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8dd1469f-7941-4fd2-a7eb-0a4861cd9dd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_e70e6c67-3e0e-4293-8b65-0a78a6e6b978" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9c5a801f-e73f-47c9-bc59-d942d0f0e8c1" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_e70e6c67-3e0e-4293-8b65-0a78a6e6b978" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_3603d7ef-b8e3-46bb-b346-2da6a9ceb343" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9c5a801f-e73f-47c9-bc59-d942d0f0e8c1" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_3603d7ef-b8e3-46bb-b346-2da6a9ceb343" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
