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    <link:label id="lab_nnbr_MobileSolutionsMember_4530342F4A326754AAE163EC8A2F0472_label_en-US" xlink:label="lab_nnbr_MobileSolutionsMember_4530342F4A326754AAE163EC8A2F0472" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mobile Solutions [Member]</link:label>
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    <link:label id="lab_nnbr_LifeSciencesMember_79620234D79F13C5742063EC8A2F0F61_documentation_en-US" xlink:label="lab_nnbr_LifeSciencesMember_79620234D79F13C5742063EC8A2F0F61" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Life sciences.</link:label>
    <link:loc xlink:href="nnbr-20190630.xsd#nnbr_LifeSciencesMember" xlink:label="loc_nnbr_LifeSciencesMember_79620234D79F13C5742063EC8A2F0F61" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_F52AF786D620BD3CEE2863EC8A305EB7" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_990B1F4CDE4B5896809A63EC8A3043D6" xlink:type="locator" />
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    <link:label id="lab_country_BR_8A3584915FB25470A40A63EC899F220C_terseLabel_en-US" xlink:label="lab_country_BR_8A3584915FB25470A40A63EC899F220C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Brazil</link:label>
    <link:label id="lab_country_BR_8A3584915FB25470A40A63EC899F220C_label_en-US" xlink:label="lab_country_BR_8A3584915FB25470A40A63EC899F220C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">BRAZIL</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_BR" xlink:label="loc_country_BR_8A3584915FB25470A40A63EC899F220C" xlink:type="locator" />
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    <link:label id="lab_country_DE_469E011E12F17E029DBA63EC899FC3CF_terseLabel_en-US" xlink:label="lab_country_DE_469E011E12F17E029DBA63EC899FC3CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Germany</link:label>
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    <link:label id="lab_country_CH_D92553C209766178184863EC899F9070_terseLabel_en-US" xlink:label="lab_country_CH_D92553C209766178184863EC899F9070" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Switzerland</link:label>
    <link:label id="lab_country_CH_D92553C209766178184863EC899F9070_label_en-US" xlink:label="lab_country_CH_D92553C209766178184863EC899F9070" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SWITZERLAND</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CH" xlink:label="loc_country_CH_D92553C209766178184863EC899F9070" xlink:type="locator" />
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    <link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_PL" xlink:label="loc_country_PL_F33C642CB01813D7692B63EC899FC139" xlink:type="locator" />
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    <link:label id="lab_country_IT_CC2C38F3C3C8834C490063EC899FC54F_terseLabel_en-US" xlink:label="lab_country_IT_CC2C38F3C3C8834C490063EC899FC54F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Italy</link:label>
    <link:label id="lab_country_IT_CC2C38F3C3C8834C490063EC899FC54F_label_en-US" xlink:label="lab_country_IT_CC2C38F3C3C8834C490063EC899FC54F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ITALY</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_IT" xlink:label="loc_country_IT_CC2C38F3C3C8834C490063EC899FC54F" xlink:type="locator" />
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    <link:label id="lab_nnbr_OtherCountryMember_E1789EDDFB5368BFD9ED63EC899FCFBE_label_en-US" xlink:label="lab_nnbr_OtherCountryMember_E1789EDDFB5368BFD9ED63EC899FCFBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Country [Member]</link:label>
    <link:label id="lab_nnbr_OtherCountryMember_E1789EDDFB5368BFD9ED63EC899FCFBE_documentation_en-US" xlink:label="lab_nnbr_OtherCountryMember_E1789EDDFB5368BFD9ED63EC899FCFBE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other country.</link:label>
    <link:loc xlink:href="nnbr-20190630.xsd#nnbr_OtherCountryMember" xlink:label="loc_nnbr_OtherCountryMember_E1789EDDFB5368BFD9ED63EC899FCFBE" xlink:type="locator" />
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    <link:label id="lab_srt_ConsolidationItemsAxis_B4363FC7B4FBD49E4EA463EC899FDD91_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_B4363FC7B4FBD49E4EA463EC899FDD91" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_B4363FC7B4FBD49E4EA463EC899FDD91" xlink:type="locator" />
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    <link:label id="lab_srt_ConsolidationItemsDomain_37D29E91252D5E3B897363EC899FF5F1_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_37D29E91252D5E3B897363EC899FF5F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_37D29E91252D5E3B897363EC899FF5F1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingSegmentsMember_704E6D482A8C1F847D6263EC899F8740_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_704E6D482A8C1F847D6263EC899F8740" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Segments</link:label>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_704E6D482A8C1F847D6263EC899F8740_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_704E6D482A8C1F847D6263EC899F8740" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_704E6D482A8C1F847D6263EC899F8740" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IntersegmentEliminationMember_5E7C39BDEBFD1CF0D60563EC899FE64B_terseLabel_en-US" xlink:label="lab_us-gaap_IntersegmentEliminationMember_5E7C39BDEBFD1CF0D60563EC899FE64B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intersegment Sales Eliminations</link:label>
    <link:label id="lab_us-gaap_IntersegmentEliminationMember_5E7C39BDEBFD1CF0D60563EC899FE64B_label_en-US" xlink:label="lab_us-gaap_IntersegmentEliminationMember_5E7C39BDEBFD1CF0D60563EC899FE64B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intersegment Eliminations [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_5E7C39BDEBFD1CF0D60563EC899FE64B" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B80D8EA03FBE17EECA4CFAB1B239A990" xlink:type="locator" />
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    <link:label id="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1_terseLabel_en-US" xlink:label="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate and Eliminations</link:label>
    <link:label id="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1_label_en-US" xlink:label="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate And Eliminations [Member]</link:label>
    <link:label id="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1_documentation_en-US" xlink:label="lab_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the aggregate total of non operating corporate items and elimination items.</link:label>
    <link:loc xlink:href="nnbr-20190630.xsd#nnbr_CorporateAndEliminationsMember" xlink:label="loc_nnbr_CorporateAndEliminationsMember_E7C9E8877E0844A9C37AFAB1B23B0AF1" xlink:type="locator" />
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    <link:label id="lab_nnbr_CorporateAndConsolidationsMember_E7D4D8D43520247DED0DFAB1B23C565F_terseLabel_en-US" xlink:label="lab_nnbr_CorporateAndConsolidationsMember_E7D4D8D43520247DED0DFAB1B23C565F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate and Consolidations</link:label>
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    <link:label id="lab_nnbr_CorporateAndConsolidationsMember_E7D4D8D43520247DED0DFAB1B23C565F_documentation_en-US" xlink:label="lab_nnbr_CorporateAndConsolidationsMember_E7D4D8D43520247DED0DFAB1B23C565F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Corporate and consolidations.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_57E4B446124D95A3F8AFFAB1B23C75F5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_E2E88EFEFFFC2D17C5DF0E5ED7854E30_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_E2E88EFEFFFC2D17C5DF0E5ED7854E30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: imputed interest</link:label>
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    <link:label id="lab_us-gaap_OperatingLeaseLiability_1772CB2BBCC5809514D60E5ED78533DF_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_1772CB2BBCC5809514D60E5ED78533DF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total lease liabilities</link:label>
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    <link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance Leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payment, Due [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587" xlink:to="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9E4988B68AEDB4967BE10E5ED7866587" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_FB8C44EE2E41249550CE0E5ED7869F07" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_285D020720B7E79394C80E5ED786D322" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_DCD8D1FB7BD67E35CFD60E5ED7865F07" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_2961B17D2CECE3D5D7300E5ED786AE78" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_A78549D400DAB400A91D0E5ED786EF9A_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_A78549D400DAB400A91D0E5ED786EF9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_A78549D400DAB400A91D0E5ED786EF9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_A78549D400DAB400A91D0E5ED786EF9A" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_A78549D400DAB400A91D0E5ED786EF9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_AD3D3AEAA4E5242655830E5ED7878E6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_1DDBEF375EE7A144FAB60E5ED787E578_totalLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_1DDBEF375EE7A144FAB60E5ED787E578" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total future minimum lease payments</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_1DDBEF375EE7A144FAB60E5ED787E578_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_1DDBEF375EE7A144FAB60E5ED787E578" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payment, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_1DDBEF375EE7A144FAB60E5ED787E578" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_B0C30AAAB21BA265E84A0E5ED7878411_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_B0C30AAAB21BA265E84A0E5ED7878411" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: imputed interest</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_B0C30AAAB21BA265E84A0E5ED7878411" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_D0CA201476FFF90921E00E5ED7877D1A" xlink:type="locator" />
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    <link:label id="lab_nnbr_WeightedAverageRemainingLeaseTermAbstract_4AB586D992D8A1449F2C0E5ED7DE0C88_terseLabel_en-US" xlink:label="lab_nnbr_WeightedAverageRemainingLeaseTermAbstract_4AB586D992D8A1449F2C0E5ED7DE0C88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-Average Remaining Lease Term (years)</link:label>
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    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_89DAC27B8A141A4E5FB90E5ED7DE2357_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_89DAC27B8A141A4E5FB90E5ED7DE2357" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance leases</link:label>
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    <link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_297FEC9969F7A17E519263EC8A79E1F9_label_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_297FEC9969F7A17E519263EC8A79E1F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Activities, Cash Flow Statement</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_A81C019624CEB1A8C27D63EC8A792D45_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_A81C019624CEB1A8C27D63EC8A792D45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_A81C019624CEB1A8C27D63EC8A792D45" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_21DFEB21B8DDF8905D8163EC8A7990AD_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_21DFEB21B8DDF8905D8163EC8A7990AD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable and payable, net</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_E2A8E30C4313D5D66B0463EC8A7AFA87" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_61585A0BA982FFE0B88763EC8A7AF5C8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_846AC650BED98752474663EC8A7BDE23_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_846AC650BED98752474663EC8A7BDE23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_846AC650BED98752474663EC8A7BDE23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_846AC650BED98752474663EC8A7BDE23" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_846AC650BED98752474663EC8A7BDE23" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEE025B98391D77D3EA63EC8A7BA710_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEE025B98391D77D3EA63EC8A7BA710" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEE025B98391D77D3EA63EC8A7BA710_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEE025B98391D77D3EA63EC8A7BA710" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEE025B98391D77D3EA63EC8A7BA710" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_3751908DDAFB95F122DD63EC8A7C4406_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts_3751908DDAFB95F122DD63EC8A7C4406" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Cash paid for debt issuance or prepayment costs</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_3751908DDAFB95F122DD63EC8A7C4406_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts_3751908DDAFB95F122DD63EC8A7C4406" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Debt Issuance Costs</link:label>
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    <link:label id="lab_us-gaap_PaymentsOfDividends_F4A2BCF749843DD4D19763EC8A7CF001_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_F4A2BCF749843DD4D19763EC8A7CF001" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Dividends</link:label>
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_396A79E496E48E98185F63EC8A7C8423_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_396A79E496E48E98185F63EC8A7C8423" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_396A79E496E48E98185F63EC8A7C8423" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_7491F9E72D9A513D125863EC8A7CE0AC_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_7491F9E72D9A513D125863EC8A7CE0AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from (repayments of) short-term debt, net</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_197F7F13A491B7EF058763EC8A7C595F_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_197F7F13A491B7EF058763EC8A7C595F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_619DAFA6EB3F905DD5D763EC8A7D8CE0_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_619DAFA6EB3F905DD5D763EC8A7D8CE0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_619DAFA6EB3F905DD5D763EC8A7D8CE0_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_619DAFA6EB3F905DD5D763EC8A7D8CE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_619DAFA6EB3F905DD5D763EC8A7D8CE0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_25394B199ECC897D2FD363EC8A7D6AC5_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_25394B199ECC897D2FD363EC8A7D6AC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of exchange rate changes on cash flows</link:label>
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    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_37B08522F9003496E1F463EC8A7DFCCB_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_37B08522F9003496E1F463EC8A7DFCCB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net change in cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_37B08522F9003496E1F463EC8A7DFCCB_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_37B08522F9003496E1F463EC8A7DFCCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
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