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<!-- Creation Date      : 2019-04-30T12:16:14.4804675+00:00 -->
<!-- Version            : 3.4.7044.22220 -->
<!-- Package ID         : b22ffc94297f40ac94290b7eaa4c010d -->
<!-- Copyright (c) 2019 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="strt_CommercialAndOtherOriginalEquipmentManufacturersCustomersMember" name="CommercialAndOtherOriginalEquipmentManufacturersCustomersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_HyundaiOrKiaMember" name="HyundaiOrKiaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_USFederalStatutoryTaxRateEffectiveJanuary12018ImpactingFiscalFilersCurrentPeriodAnnualEffectiveTaxRate" name="USFederalStatutoryTaxRateEffectiveJanuary12018ImpactingFiscalFilersCurrentPeriodAnnualEffectiveTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_PeriodInYearsOneTimeTransitionTaxOnDeemedRepatriatedEarningsOfForeignSubsidiariesPayable" name="PeriodInYearsOneTimeTransitionTaxOnDeemedRepatriatedEarningsOfForeignSubsidiariesPayable" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_IncomeTaxLineItems" name="IncomeTaxLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_IncomeTaxTable" name="IncomeTaxTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_TwoThousandAndSeventeenTaxCutsAndJobsActMember" name="TwoThousandAndSeventeenTaxCutsAndJobsActMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_DiscreteNetTaxBenefitRecordedTwoThousandSeventeenTaxCutsAndJobsAct" name="DiscreteNetTaxBenefitRecordedTwoThousandSeventeenTaxCutsAndJobsAct" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="strt_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="strt_IncomeTaxExpenseBenefitResultingFromTerminationOfDefinedBenefitPensionPlan" name="IncomeTaxExpenseBenefitResultingFromTerminationOfDefinedBenefitPensionPlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="strt_OmnibusStockIncentivePlanMember" name="OmnibusStockIncentivePlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_TerminationOfQualifiedPensionPlanDescription" name="TerminationOfQualifiedPensionPlanDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_DateTheBoardOfDirectorsFreezeBenefitAccrualsAndFutureEligibilityUnderTheQualifiedPensionPlan" name="DateTheBoardOfDirectorsFreezeBenefitAccrualsAndFutureEligibilityUnderTheQualifiedPensionPlan" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_DefinedBenefitPlanRemainingNonCashCompensationExpense" name="DefinedBenefitPlanRemainingNonCashCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="strt_AnnualBenefitAccrualPercentageUnderSupplementalExecutiveRetirementPlan" name="AnnualBenefitAccrualPercentageUnderSupplementalExecutiveRetirementPlan" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_DefinedBenefitPlanVestingPeriod" name="DefinedBenefitPlanVestingPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_TrustAssets" name="TrustAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="strt_OtherPostretirementBenefitsAnnualBenefitLimitPerFutureEligibleRetiree" name="OtherPostretirementBenefitsAnnualBenefitLimitPerFutureEligibleRetiree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="strt_OtherPostretirementBenefitsMaximumBenefitPeriod" name="OtherPostretirementBenefitsMaximumBenefitPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="strt_PensionAndSupplementalEmployeeRetirementPlanDefinedBenefitMember" name="PensionAndSupplementalEmployeeRetirementPlanDefinedBenefitMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="strt_TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect" name="TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
</xsd:schema>
