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  <xsd:element name="StadcoTermLoanAt3.79PercentInterestDueAugust2028Member" id="tpcs_StadcoTermLoanAt3.79PercentInterestDueAugust2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LeaseLiabilityCurrent" id="tpcs_LeaseLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="OtherLeaseAssetsAndLeaseLiabilities" id="tpcs_OtherLeaseAssetsAndLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NonrefundableCommitmentFeePercentages" id="tpcs_NonrefundableCommitmentFeePercentages" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TaxYearsPriorToTwoThousandTwentyOneMember" id="tpcs_TaxYearsPriorToTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrepaidAdvisoryFeesOther" id="tpcs_PrepaidAdvisoryFeesOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CapitalExpendituresFromPurchaseOfFixedAssets" id="tpcs_CapitalExpendituresFromPurchaseOfFixedAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CashFlowRatioOfDebtService" id="tpcs_CashFlowRatioOfDebtService" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="GainLossFromContingentConsideration" id="tpcs_GainLossFromContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="Customers.Member" id="tpcs_Customers.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RanorTermLoanAt6.05InterestDueDecember2027Member" id="tpcs_RanorTermLoanAt6.05InterestDueDecember2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentArrangementAgreementWithDepartmentOfWaterAndPowerOfCityOfLosAngelesMember" id="tpcs_PaymentArrangementAgreementWithDepartmentOfWaterAndPowerOfCityOfLosAngelesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RequiredMinimumDebtServiceCoverageRatio" id="tpcs_RequiredMinimumDebtServiceCoverageRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricService" id="tpcs_AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricService" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PaymentArrangementAgreementMonthlyInstalmentsPayable" id="tpcs_PaymentArrangementAgreementMonthlyInstalmentsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PaymentArrangementAgreementAnnualLatePaymentChargePercentage" id="tpcs_PaymentArrangementAgreementAnnualLatePaymentChargePercentage" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricServiceCurrent" id="tpcs_AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricServiceCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricServiceNoncurrent" id="tpcs_AggregateDelinquentAndUnpaidOutstandingAmountsForWaterWaterServiceElectricEnergyAndOrElectricServiceNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RisksAndUncertaintiesPolicyPolicyTextBlock" id="tpcs_RisksAndUncertaintiesPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BasisOfPresentationAndSignificantAccountingPoliciesTable" id="tpcs_BasisOfPresentationAndSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BasisOfPresentationAndSignificantAccountingPoliciesLineItems" id="tpcs_BasisOfPresentationAndSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OneSupplierMember" id="tpcs_OneSupplierMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsToBeVestedOnEachAnniversary" id="tpcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsToBeVestedOnEachAnniversary" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TotalAvailableLiquidity" id="tpcs_TotalAvailableLiquidity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeferredTaxAssetsOperatingLeases" id="tpcs_DeferredTaxAssetsOperatingLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StockBasedAcquisitionTerminationFeesAmount" id="tpcs_StockBasedAcquisitionTerminationFeesAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StockIssuedDuringPeriodValueIssuedForTerminationFee" id="tpcs_StockIssuedDuringPeriodValueIssuedForTerminationFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="StockIssuedDuringPeriodSharesIssuedForTerminationFee" id="tpcs_StockIssuedDuringPeriodSharesIssuedForTerminationFee" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RevolverLoanCapacity" id="tpcs_RevolverLoanCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StockIssuedFairValueRelatingToBreakupFee" id="tpcs_StockIssuedFairValueRelatingToBreakupFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AccruedBreakupFeeAddition" id="tpcs_AccruedBreakupFeeAddition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="WeightedAverageAmountOutstandingValue" id="tpcs_WeightedAverageAmountOutstandingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ExtinguishmentOfLiabilities" id="tpcs_ExtinguishmentOfLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NumberOfDefinedContributionAndSavingPlan" id="tpcs_NumberOfDefinedContributionAndSavingPlan" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="StockIssuedDuringPeriodCommonStockAndWarrants" id="tpcs_StockIssuedDuringPeriodCommonStockAndWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PaymentsOfPrivatePlacementFees" id="tpcs_PaymentsOfPrivatePlacementFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RightOfUseAssetAccumulatedAmortization" id="tpcs_RightOfUseAssetAccumulatedAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RightOfUseAssetsNet" id="tpcs_RightOfUseAssetsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OperatingLeaseAndFinanceLeaseLiabilitiesMaturityTableTextBlock" id="tpcs_OperatingLeaseAndFinanceLeaseLiabilitiesMaturityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LesseeOperatingAndFinanceLeaseLiabilityToBePaidFiscalYearMaturityAbstract" id="tpcs_LesseeOperatingAndFinanceLeaseLiabilityToBePaidFiscalYearMaturityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsDueNextTwelveMonths" id="tpcs_LesseeLeaseLiabilityPaymentsDueNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsToBePaidYearTwo" id="tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsToBePaidYearThree" id="tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsToBePaidYearFour" id="tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsToBePaidYearFive" id="tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityPaymentsDue" id="tpcs_LesseeLeaseLiabilityPaymentsDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeLeaseLiabilityImputedInterest" id="tpcs_LesseeLeaseLiabilityImputedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RestrictedStockIssuedOnAugust32023Member" id="tpcs_RestrictedStockIssuedOnAugust32023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RestrictedStockIssuedOnNovember262024Member" id="tpcs_RestrictedStockIssuedOnNovember262024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EquipmentFinancingAgreementMember" id="tpcs_EquipmentFinancingAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EquipmentFinancingAgreementTerm" id="tpcs_EquipmentFinancingAgreementTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EquipmentFinancingAgreementPurchasePrice" id="tpcs_EquipmentFinancingAgreementPurchasePrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EquipmentFinancingAgreementMonthlyInstallmentsPayment" id="tpcs_EquipmentFinancingAgreementMonthlyInstallmentsPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="StadcoEquipmentFinancingAt13.38InterestDueSeptember2026Member" id="tpcs_StadcoEquipmentFinancingAt13.38InterestDueSeptember2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromSaleOfEquipmentFinancingActivities" id="tpcs_ProceedsFromSaleOfEquipmentFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfNonEmployeeDirectors" id="tpcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfNonEmployeeDirectors" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessAcquisitionTerminationCosts" id="tpcs_BusinessAcquisitionTerminationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="RestrictedCommonStockAwardedOnJanuary242025Member" id="tpcs_RestrictedCommonStockAwardedOnJanuary242025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ReimbursementsForPurchasesOfFixedAssets" id="tpcs_ReimbursementsForPurchasesOfFixedAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OperatingLeaseRightOfUseAssetBeforeAccumulatedAmortization" id="tpcs_OperatingLeaseRightOfUseAssetBeforeAccumulatedAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EmployeeAgreementAnnualCommitmentForFutureSalariesDuringNextFiscalYear" id="tpcs_EmployeeAgreementAnnualCommitmentForFutureSalariesDuringNextFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AdjustmentObligationsSatisfiedPayableMember" id="tpcs_AdjustmentObligationsSatisfiedPayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentMaximumProceedsLimitForDueDiligence" id="tpcs_DebtInstrumentMaximumProceedsLimitForDueDiligence" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DefinedContributionAndSavingsPlanRequisiteServicePeriod" id="tpcs_DefinedContributionAndSavingsPlanRequisiteServicePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RestrictedStockIssuedOnMarch312025Member" id="tpcs_RestrictedStockIssuedOnMarch312025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RestrictedStockIssuedOnOctober22025Member" id="tpcs_RestrictedStockIssuedOnOctober22025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Sales1Member" id="tpcs_Sales1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LineOfCreditFacilityFailureToPerformFee" id="tpcs_LineOfCreditFacilityFailureToPerformFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanTerm" id="tpcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RestrictedStockIssuedOnMarch62026Member" id="tpcs_RestrictedStockIssuedOnMarch62026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsToBeVestedOutstandingNumber" id="tpcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsToBeVestedOutstandingNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="LoanAmountOutstandingValue" id="tpcs_LoanAmountOutstandingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SharesIssuedUponCashlessExerciseOfStockOptions" id="tpcs_SharesIssuedUponCashlessExerciseOfStockOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
</xsd:schema>
