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  <xsd:element abstract="true" id="nnbr_OtherCountryMember" name="OtherCountryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_ParagonMedicalIncMember" name="ParagonMedicalIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_PayPeriodForAccruedRestructuringAndIntegrationCosts" name="PayPeriodForAccruedRestructuringAndIntegrationCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_PerformanceSharesReturnOnInvestedCapitalMember" name="PerformanceSharesReturnOnInvestedCapitalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_PerformanceSharesTsrAwardsMember" name="PerformanceSharesTsrAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_PowerSolutionsMember" name="PowerSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_PrecisionEngineeredProductsHoldingIncMember" name="PrecisionEngineeredProductsHoldingIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_PriorPeriodReclassificationAdjustmentMember" name="PriorPeriodReclassificationAdjustmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_RegulatoryAssetsAbstract" name="RegulatoryAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_RestructuringAndIntegrationCharges" name="RestructuringAndIntegrationCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ScheduleOfPerformanceUnitAwardsBasedOnExpectedPerformanceTableTextBlock" name="ScheduleOfPerformanceUnitAwardsBasedOnExpectedPerformanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_SecondLienCreditAgreementMember" name="SecondLienCreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_SeniorSecuredRevolvingFacilityMember" name="SeniorSecuredRevolvingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_SeniorSecuredTermLoanBMember" name="SeniorSecuredTermLoanBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardBasedOnThresholdPerformanceAchievementPercentage" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardBasedOnThresholdPerformanceAchievementPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfSharesIssuableBasedOnThresholdPerformance" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfSharesIssuableBasedOnThresholdPerformance" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementBySharebasedPaymentAwardBasedOnMaximumPerformanceAchievementPercentage" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardBasedOnMaximumPerformanceAchievementPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementBySharebasedPaymentAwardBasedOnTargetPerformanceAchievementPercentage" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardBasedOnTargetPerformanceAchievementPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementBySharebasedPaymentAwardPercentageOfSharesIssuableBasedOnMaximumPerformance" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardPercentageOfSharesIssuableBasedOnMaximumPerformance" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_ShareBasedCompensationArrangementBySharebasedPaymentAwardPercentageOfSharesIssuableBasedOnTargetPerformance" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardPercentageOfSharesIssuableBasedOnTargetPerformance" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAndAdditionalDisclosuresAbstract" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAndAdditionalDisclosuresAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="nnbr_SharesPaidForTaxWithholdingAndForfeitedForShareBasedCompensation" name="SharesPaidForTaxWithholdingAndForfeitedForShareBasedCompensation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_WheelingPlantMember" name="WheelingPlantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nnbr_WuxiWeifuAutocamPrecisionMachineryCompanyLtdMember" name="WuxiWeifuAutocamPrecisionMachineryCompanyLtdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
