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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:2b6000e4-deae-4869-8cbf-15a0a73d133d,g:9cfe0a00-27b3-4d5b-87e9-7fc951f3474b-->
<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/CondensedConsolidatedStatementsofOperationsandComprehensiveIncomeLoss" xlink:type="simple" xlink:href="nnbr-20240331.xsd#CondensedConsolidatedStatementsofOperationsandComprehensiveIncomeLoss"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveIncomeLoss" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_a1828de8-0815-47c7-8b98-451638e42937" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_a1828de8-0815-47c7-8b98-451638e42937" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_DerivativeInstrumentsPaymentExpense_026b28d7-9899-401d-b9b0-8903781a6b66" xlink:href="nnbr-20240331.xsd#nnbr_DerivativeInstrumentsPaymentExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_nnbr_DerivativeInstrumentsPaymentExpense_026b28d7-9899-401d-b9b0-8903781a6b66" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_e5f8a9c1-4876-445d-9ca2-33258bac3e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_us-gaap_InterestExpense_e5f8a9c1-4876-445d-9ca2-33258bac3e2d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_8d0b2a46-3309-4d32-b710-278f55247b83" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_8d0b2a46-3309-4d32-b710-278f55247b83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9eec52fa-3b90-4d0c-b1a5-7eed6ccf9ae2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9eec52fa-3b90-4d0c-b1a5-7eed6ccf9ae2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_bcb36daf-6578-4844-98c5-44a44618989b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_4d54febd-f362-41ff-8116-bcd35c90c1f4" xlink:to="loc_us-gaap_OperatingIncomeLoss_bcb36daf-6578-4844-98c5-44a44618989b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_640f14c2-f33c-4b9d-9e60-26ab5b673ca4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_faf0e729-0293-4bc0-aec2-0f20b5f37166" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_640f14c2-f33c-4b9d-9e60-26ab5b673ca4" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_faf0e729-0293-4bc0-aec2-0f20b5f37166" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_4124a47b-60b9-4a3d-848d-12b13d1e15bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_640f14c2-f33c-4b9d-9e60-26ab5b673ca4" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_4124a47b-60b9-4a3d-848d-12b13d1e15bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_ddf5953c-197f-4720-87f4-87a280ef6d6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_640f14c2-f33c-4b9d-9e60-26ab5b673ca4" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_ddf5953c-197f-4720-87f4-87a280ef6d6a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c6e44113-d842-4aa6-8dcf-06138a770e45" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_43081bdd-1d9d-4b43-8766-d7b845d6bbe4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_NetIncomeLoss_c6e44113-d842-4aa6-8dcf-06138a770e45" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_43081bdd-1d9d-4b43-8766-d7b845d6bbe4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_0da2570b-41df-459c-b70d-7423de0a0da3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_c6e44113-d842-4aa6-8dcf-06138a770e45" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_0da2570b-41df-459c-b70d-7423de0a0da3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7270c010-54cc-4b56-9e35-91f2fbab9710" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7270c010-54cc-4b56-9e35-91f2fbab9710" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_53b12b1d-94c9-4f8f-814f-5ad015db4492" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:to="loc_us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_53b12b1d-94c9-4f8f-814f-5ad015db4492" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_aba5f32e-74e0-4002-9dc5-18e1ea1edeea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_aba5f32e-74e0-4002-9dc5-18e1ea1edeea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_e5f69e43-6ebd-4d22-bc0d-c44c3d42765f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_e5f69e43-6ebd-4d22-bc0d-c44c3d42765f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_73d7ab2d-c61e-4312-9079-2342047acf04" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_bf76660b-8a54-4187-8137-d7174922bf9b" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_73d7ab2d-c61e-4312-9079-2342047acf04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_cce67794-f70a-4dfd-9726-3ec0f2a783bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_b7758a9a-ee96-40d7-b2f2-5f840447e51b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_cce67794-f70a-4dfd-9726-3ec0f2a783bb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_b7758a9a-ee96-40d7-b2f2-5f840447e51b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_1519cf8c-86a3-4ae1-88d9-4b1804d646be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_cce67794-f70a-4dfd-9726-3ec0f2a783bb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_1519cf8c-86a3-4ae1-88d9-4b1804d646be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_60a6ef8d-6364-43a7-b3c3-0088934ea713" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_cce67794-f70a-4dfd-9726-3ec0f2a783bb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_60a6ef8d-6364-43a7-b3c3-0088934ea713" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_6d3b09a3-a97f-46ec-bec1-d6822ee1050e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_5201d7ba-6873-4511-881e-383b8084dfc8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_6d3b09a3-a97f-46ec-bec1-d6822ee1050e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_5201d7ba-6873-4511-881e-383b8084dfc8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_461887c9-d321-40f5-aaae-f90b8f572fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_6d3b09a3-a97f-46ec-bec1-d6822ee1050e" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_461887c9-d321-40f5-aaae-f90b8f572fb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_3cae2d3f-4d68-4cfb-bd52-18f4fa9f9f94" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_ef95c21f-6ab4-43a5-af7c-db9d62eded21" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_3cae2d3f-4d68-4cfb-bd52-18f4fa9f9f94" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_ef95c21f-6ab4-43a5-af7c-db9d62eded21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_aba22caf-bc6b-4928-8b29-7b08b5af7503" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_3cae2d3f-4d68-4cfb-bd52-18f4fa9f9f94" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_aba22caf-bc6b-4928-8b29-7b08b5af7503" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_7a2e51ce-c0ab-4db9-a483-8553a119cc1f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_1b00b658-8919-4bd7-b6da-562fc4e1c156" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_7a2e51ce-c0ab-4db9-a483-8553a119cc1f" xlink:to="loc_us-gaap_NetIncomeLoss_1b00b658-8919-4bd7-b6da-562fc4e1c156" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_518902dc-8520-44db-8077-6cf1e29a5deb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_7a2e51ce-c0ab-4db9-a483-8553a119cc1f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_518902dc-8520-44db-8077-6cf1e29a5deb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="nnbr-20240331.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1d78400a-977f-44a2-8e3b-3005c5cd380f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_41870e3f-a0a8-4d4e-bf37-b9771038065c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1d78400a-977f-44a2-8e3b-3005c5cd380f" xlink:to="loc_us-gaap_CommonStockValue_41870e3f-a0a8-4d4e-bf37-b9771038065c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_7cd4628d-2cbf-4838-a9a6-140e78ace2ef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1d78400a-977f-44a2-8e3b-3005c5cd380f" xlink:to="loc_us-gaap_AdditionalPaidInCapital_7cd4628d-2cbf-4838-a9a6-140e78ace2ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_d1aff9b9-d394-4506-a04d-0bb120b8639e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1d78400a-977f-44a2-8e3b-3005c5cd380f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_d1aff9b9-d394-4506-a04d-0bb120b8639e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_26130bca-6eff-47dc-bae2-f023892a006a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1d78400a-977f-44a2-8e3b-3005c5cd380f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_26130bca-6eff-47dc-bae2-f023892a006a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_e49ecc66-e467-4080-8209-662e88e5dfe0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:to="loc_us-gaap_LiabilitiesCurrent_e49ecc66-e467-4080-8209-662e88e5dfe0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_bf28d0e2-4886-4a76-a9f5-bcab98ee58fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_bf28d0e2-4886-4a76-a9f5-bcab98ee58fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_7f2746b6-5934-457e-ad46-5cf49e9d30e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_7f2746b6-5934-457e-ad46-5cf49e9d30e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_1dda894d-918a-4495-8d78-82a23d29b128" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_1dda894d-918a-4495-8d78-82a23d29b128" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_65d82876-efc3-45dd-b2a4-0a38c74bd581" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_6b2fd9d4-53e9-4a6f-9eaf-be8da3e85400" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_65d82876-efc3-45dd-b2a4-0a38c74bd581" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_45c498e4-2c0b-4e00-83cc-c1f458de9a00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_45c498e4-2c0b-4e00-83cc-c1f458de9a00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_fc2da138-96a2-4d6f-9542-7dc1a043c405" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_OtherAssetsCurrent_fc2da138-96a2-4d6f-9542-7dc1a043c405" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_96fbaf47-93d6-4843-ac06-c364c9b42f8c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_InventoryNet_96fbaf47-93d6-4843-ac06-c364c9b42f8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_7e866f1a-6d49-4c7a-baf7-192f2d238b8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_7e866f1a-6d49-4c7a-baf7-192f2d238b8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_04e37bb2-f5a0-4a6e-b459-7bb2e8807928" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_IncomeTaxesReceivable_04e37bb2-f5a0-4a6e-b459-7bb2e8807928" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_2d2ff143-03e4-4ed4-8585-06839067c7ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_04e9960a-d473-41e5-86ad-9bf7b972770c" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_2d2ff143-03e4-4ed4-8585-06839067c7ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_e3bb3b30-ea79-4229-b3b1-a75fa6bf74ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_AccountsPayableCurrent_e3bb3b30-ea79-4229-b3b1-a75fa6bf74ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_fdc94117-8c05-4b6d-b5df-6c31c9d25e17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_fdc94117-8c05-4b6d-b5df-6c31c9d25e17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_222725e1-479e-45e9-94ed-e760eb0e7e2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_222725e1-479e-45e9-94ed-e760eb0e7e2a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_3e63d024-d323-41c4-9256-bf07b59681da" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_LongTermDebtCurrent_3e63d024-d323-41c4-9256-bf07b59681da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_83386534-0dd7-4260-bb34-c77a1cbb6153" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_83386534-0dd7-4260-bb34-c77a1cbb6153" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_4fb6d467-facc-4e02-afbd-20c332867332" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_b27a89ea-8dbc-460b-b67d-9449e330e425" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_4fb6d467-facc-4e02-afbd-20c332867332" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_97913db6-fa90-48bb-8343-7b161ef3614b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_97913db6-fa90-48bb-8343-7b161ef3614b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_f0230387-fc25-4e0e-a4a8-566610b738ad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_AssetsCurrent_f0230387-fc25-4e0e-a4a8-566610b738ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_c798d3da-e46a-46c5-8b69-97def2cf22f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_c798d3da-e46a-46c5-8b69-97def2cf22f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_b6b0f662-ea3f-44bc-a094-c1da0967591c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_b6b0f662-ea3f-44bc-a094-c1da0967591c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_c6182a8f-c32d-4a8d-adc4-6cc0ea429349" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_c6182a8f-c32d-4a8d-adc4-6cc0ea429349" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_f19427cc-7e64-4c41-84dd-159d77a35bc9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_f19427cc-7e64-4c41-84dd-159d77a35bc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_f2e6e9e9-63f4-49bc-8a45-2bf556d6cf9e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_EquityMethodInvestments_f2e6e9e9-63f4-49bc-8a45-2bf556d6cf9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_0c600041-679f-45cb-aef0-d7dae374f368" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_0c600041-679f-45cb-aef0-d7dae374f368" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c4ca6f26-1ba2-44f8-bbad-d6393a5d736c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_0b234c5c-4537-45c9-8036-248b81f62ff6" xlink:to="loc_us-gaap_Goodwill_c4ca6f26-1ba2-44f8-bbad-d6393a5d736c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_1beea3b9-2b0a-47cb-b5b5-d6e3af6eae5e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_39056e11-70c8-4b27-a40a-e750261ab377" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_1beea3b9-2b0a-47cb-b5b5-d6e3af6eae5e" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_39056e11-70c8-4b27-a40a-e750261ab377" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_1ed78e72-5b1a-4ac5-8c6c-9230e278d7a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_1beea3b9-2b0a-47cb-b5b5-d6e3af6eae5e" xlink:to="loc_us-gaap_Liabilities_1ed78e72-5b1a-4ac5-8c6c-9230e278d7a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_652fc5e2-14be-4a6e-b5c9-826cfc9bca92" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_1beea3b9-2b0a-47cb-b5b5-d6e3af6eae5e" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_652fc5e2-14be-4a6e-b5c9-826cfc9bca92" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="nnbr-20240331.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_88e46185-52c8-418f-b070-cc8e84576788" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_6271eada-f515-449b-92f6-828c7a8c5eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_88e46185-52c8-418f-b070-cc8e84576788" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_6271eada-f515-449b-92f6-828c7a8c5eb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_7b0e8c68-a41e-4cb4-b4e1-7c0f75af0dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_88e46185-52c8-418f-b070-cc8e84576788" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_7b0e8c68-a41e-4cb4-b4e1-7c0f75af0dd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_52ec3672-cc77-4416-afc0-cba15efc92a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_88e46185-52c8-418f-b070-cc8e84576788" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_52ec3672-cc77-4416-afc0-cba15efc92a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1e3f3420-6432-4983-b336-bea6db7eb8d4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_88e46185-52c8-418f-b070-cc8e84576788" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1e3f3420-6432-4983-b336-bea6db7eb8d4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_1e56fe4e-fd43-49c4-8b7a-18301f4bcea1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_1e56fe4e-fd43-49c4-8b7a-18301f4bcea1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForHedgeInvestingActivities_ca619c0e-3663-4f4a-9eb4-60febe961e23" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForHedgeInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:to="loc_us-gaap_PaymentsForHedgeInvestingActivities_ca619c0e-3663-4f4a-9eb4-60febe961e23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_281023f7-316c-4c6c-844b-4790e2013bf0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_281023f7-316c-4c6c-844b-4790e2013bf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_f446ef65-c44e-49de-b195-ba90eedc5a16" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_f446ef65-c44e-49de-b195-ba90eedc5a16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_e5b1035f-0dcb-4b92-b6c1-485dff57a012" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_d8bcf432-e9a5-4dc0-b3fd-36c5dc8c481b" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_e5b1035f-0dcb-4b92-b6c1-485dff57a012" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_6c6accd1-d390-45b7-8efd-ca8539612c30" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_6c6accd1-d390-45b7-8efd-ca8539612c30" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_6bfc8959-f5a4-4418-bbf4-d4a76188172f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_6bfc8959-f5a4-4418-bbf4-d4a76188172f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_63de53a5-c9b5-434c-875f-373b6109e4e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_63de53a5-c9b5-434c-875f-373b6109e4e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_PaymentsForTemporaryEquityRedemption_b8102612-d951-4658-82c2-773afe12f0d8" xlink:href="nnbr-20240331.xsd#nnbr_PaymentsForTemporaryEquityRedemption"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_nnbr_PaymentsForTemporaryEquityRedemption_b8102612-d951-4658-82c2-773afe12f0d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_ProceedsFromFailedSaleLeasebackOfEquipment_dd3e51d5-9bc9-428d-a188-cebade2ec77d" xlink:href="nnbr-20240331.xsd#nnbr_ProceedsFromFailedSaleLeasebackOfEquipment"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_nnbr_ProceedsFromFailedSaleLeasebackOfEquipment_dd3e51d5-9bc9-428d-a188-cebade2ec77d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings_7f2b77f1-a8bd-4d5f-82cd-1c20a1ab0c3b" xlink:href="nnbr-20240331.xsd#nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_nnbr_ProceedsFromFailedSaleLeasebackOfLandAndBuildings_7f2b77f1-a8bd-4d5f-82cd-1c20a1ab0c3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_5ef4ae64-d37a-4fcd-bc21-d8ea538c1628" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_5ef4ae64-d37a-4fcd-bc21-d8ea538c1628" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_nnbr_RepaymentsOfFinancingObligations_1873fcd1-889f-4aac-82dc-27af8658e080" xlink:href="nnbr-20240331.xsd#nnbr_RepaymentsOfFinancingObligations"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_nnbr_RepaymentsOfFinancingObligations_1873fcd1-889f-4aac-82dc-27af8658e080" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_573ef6db-bf98-455a-9939-14cb5f51dd08" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_573ef6db-bf98-455a-9939-14cb5f51dd08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_6922451a-69a8-4c4b-8a84-898cb763e7ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_PaymentsOfDividends_6922451a-69a8-4c4b-8a84-898cb763e7ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_2d874063-2cbd-4fc0-a35c-5fb3d42e0b63" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_9934662f-96c2-42b1-a805-74d9c3af3328" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_2d874063-2cbd-4fc0-a35c-5fb3d42e0b63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_a5d8aac0-0595-4e86-9ad1-427f3974f0f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_a5d8aac0-0595-4e86-9ad1-427f3974f0f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_d752d35e-11c9-4b97-8153-cb006b2714d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_d752d35e-11c9-4b97-8153-cb006b2714d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_1f3216e3-ae62-4851-a766-7f52080ff2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_1f3216e3-ae62-4851-a766-7f52080ff2c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_9c65b5bc-2564-4c8f-a815-f3852087a7e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_9c65b5bc-2564-4c8f-a815-f3852087a7e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_1327c49c-43c5-42e6-8826-e1da714886a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_1327c49c-43c5-42e6-8826-e1da714886a5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_2adcd028-224a-40ae-8ac6-24c202f83fad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_2adcd028-224a-40ae-8ac6-24c202f83fad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_775ab3e8-df66-4204-a936-a30087b3449e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_775ab3e8-df66-4204-a936-a30087b3449e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortizationDiscontinuedOperations_5cdb36f5-f9fd-4c85-845b-9467cd1f7e6e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationAndAmortizationDiscontinuedOperations"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_DepreciationAndAmortizationDiscontinuedOperations_5cdb36f5-f9fd-4c85-845b-9467cd1f7e6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_c6e23f2a-e3ec-4878-9d0e-2bcfbc6e3ff7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_ProfitLoss_c6e23f2a-e3ec-4878-9d0e-2bcfbc6e3ff7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_3e600df8-a301-4cc4-b1f4-6ec9cb0f7134" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_3e600df8-a301-4cc4-b1f4-6ec9cb0f7134" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_fe1d2e00-c8b0-4f9e-b408-43870143ad32" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_fe1d2e00-c8b0-4f9e-b408-43870143ad32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_3d1854f8-144b-4f0f-b1b7-4e19a8cdafca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_3d1854f8-144b-4f0f-b1b7-4e19a8cdafca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_4f264b33-d819-470f-ba64-13809ac110a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_ShareBasedCompensation_4f264b33-d819-470f-ba64-13809ac110a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_66ae5e2c-3445-48dc-b5b9-ddd7189d4bde" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_66ae5e2c-3445-48dc-b5b9-ddd7189d4bde" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_f474e39a-f22e-45ba-b684-b0c103680ef6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_f474e39a-f22e-45ba-b684-b0c103680ef6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d516f72b-d609-4b01-8e02-433da1f9f4c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d516f72b-d609-4b01-8e02-433da1f9f4c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_6e425c98-c700-45aa-acc4-6f91c8c3ceda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_6e425c98-c700-45aa-acc4-6f91c8c3ceda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaidInKindInterest_407b6dd7-794b-41a9-b389-6fc00680c37c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaidInKindInterest"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1766531c-379f-4703-a0ef-c2e02a990d63" xlink:to="loc_us-gaap_PaidInKindInterest_407b6dd7-794b-41a9-b389-6fc00680c37c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/InventoriesSummaryofInventoriesDetail" xlink:type="simple" xlink:href="nnbr-20240331.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_3d7cf117-a0d1-4772-93a9-305bebd2cc5d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_39135e0f-d357-4e43-92cc-cd606e357b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_3d7cf117-a0d1-4772-93a9-305bebd2cc5d" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_39135e0f-d357-4e43-92cc-cd606e357b6a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_83d3274b-0a0f-415f-8619-212016c4adb4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_3d7cf117-a0d1-4772-93a9-305bebd2cc5d" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_83d3274b-0a0f-415f-8619-212016c4adb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_b81eeada-fd89-4dff-b69d-c3cdd116c741" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_3d7cf117-a0d1-4772-93a9-305bebd2cc5d" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_b81eeada-fd89-4dff-b69d-c3cdd116c741" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/NetIncomeLossPerCommonShareSummaryofNetIncomeLossPerShareDetail" xlink:type="simple" xlink:href="nnbr-20240331.xsd#NetIncomeLossPerCommonShareSummaryofNetIncomeLossPerShareDetail"/>
  <link:calculationLink xlink:role="http://www.nninc.com/role/NetIncomeLossPerCommonShareSummaryofNetIncomeLossPerShareDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_2f47413a-adcc-47cf-b589-c52ed82ac3f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_f971e2e5-4120-4ed0-8573-f6e84161e3b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_2f47413a-adcc-47cf-b589-c52ed82ac3f5" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_f971e2e5-4120-4ed0-8573-f6e84161e3b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_d4a24eea-c6a9-4b49-8878-f922c4b97787" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_2f47413a-adcc-47cf-b589-c52ed82ac3f5" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_d4a24eea-c6a9-4b49-8878-f922c4b97787" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_439e18f7-7cc9-4be4-88d6-50a61f3ae3a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_30ac4a7b-f218-4f18-b401-d88e320bb5d6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_439e18f7-7cc9-4be4-88d6-50a61f3ae3a0" xlink:to="loc_us-gaap_NetIncomeLoss_30ac4a7b-f218-4f18-b401-d88e320bb5d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_7013b4b3-610e-4275-a691-539d6c5c124f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_NetIncomeLossAvailableToCommonStockholdersDiluted_439e18f7-7cc9-4be4-88d6-50a61f3ae3a0" xlink:to="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_7013b4b3-610e-4275-a691-539d6c5c124f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_5a38d398-86ae-4d22-8243-e6c9487f01c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_37629b6c-2534-4cdf-8534-109739470b89" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_5a38d398-86ae-4d22-8243-e6c9487f01c5" xlink:to="loc_us-gaap_NetIncomeLoss_37629b6c-2534-4cdf-8534-109739470b89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_df8929b2-fdb8-4902-935c-e24ef413b9f4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_5a38d398-86ae-4d22-8243-e6c9487f01c5" xlink:to="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_df8929b2-fdb8-4902-935c-e24ef413b9f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_fcaf35ea-74d4-4c0b-877d-e2803b709bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_51581539-37b4-43e1-b15d-671566da82b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_fcaf35ea-74d4-4c0b-877d-e2803b709bb0" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_51581539-37b4-43e1-b15d-671566da82b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_eaf2950c-6575-408b-9812-8b1226dbb5fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_fcaf35ea-74d4-4c0b-877d-e2803b709bb0" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_eaf2950c-6575-408b-9812-8b1226dbb5fe" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.nninc.com/role/AccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="nnbr-20240331.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_OtherComprehensiveIncomeLossTax_a2deb130-670f-4008-9b8c-4cdb4a5404e7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_bba0624f-93a5-494f-ae92-5790f16e6090" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTax_a2deb130-670f-4008-9b8c-4cdb4a5404e7" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_bba0624f-93a5-494f-ae92-5790f16e6090" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_16d1940c-4eba-4896-bc81-472384232316" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTax_a2deb130-670f-4008-9b8c-4cdb4a5404e7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_16d1940c-4eba-4896-bc81-472384232316" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_fa8eab11-9cfd-4070-881a-8a56ba05b62d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_8e7fc340-5342-4fed-9c90-ab9a2bd3ac9f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_fa8eab11-9cfd-4070-881a-8a56ba05b62d" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_8e7fc340-5342-4fed-9c90-ab9a2bd3ac9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_84d238f1-20c1-4e49-b150-30923a7127bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_fa8eab11-9cfd-4070-881a-8a56ba05b62d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_84d238f1-20c1-4e49-b150-30923a7127bf" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
