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  <xsd:element abstract="true" id="sxi_InterestRateSwapEffectiveDecember192014NumberOneMember" name="InterestRateSwapEffectiveDecember192014NumberOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_InterestRateSwapEffectiveDecember192014NumberTwoMember" name="InterestRateSwapEffectiveDecember192014NumberTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_InterestRateSwapEffectiveDecember192015Member" name="InterestRateSwapEffectiveDecember192015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_InvoluntaryEmployeeSeveranceAndBenefitCostsMember" name="InvoluntaryEmployeeSeveranceAndBenefitCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_LiabilitiesOfDiscontinuedOperationsNoncurrent" name="LiabilitiesOfDiscontinuedOperationsNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="sxi_LineOfCreditAccordionFeature" name="LineOfCreditAccordionFeature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="sxi_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_NumberOfFacilitiesUsedAsCollateralSoldInPeriod" name="NumberOfFacilitiesUsedAsCollateralSoldInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_OtherFundedDebtMember" name="OtherFundedDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_OutstandingForwardContractsNetUnrealizedGainLoss" name="OutstandingForwardContractsNetUnrealizedGainLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="sxi_PriorYearInitiativesMember" name="PriorYearInitiativesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_ProceedsFromAdvancePaymentOnNotesReceivable" name="ProceedsFromAdvancePaymentOnNotesReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="sxi_RestructuringExpensesBySegmentTableTextBlock" name="RestructuringExpensesBySegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_SaleOfUSRollPlateAndMachineryMember" name="SaleOfUSRollPlateAndMachineryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsBalanceSheetTableTextBlock" name="ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsBalanceSheetTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_ScheduleOfIntangibleAssetsExcludingGoodwillTableTextBlock" name="ScheduleOfIntangibleAssetsExcludingGoodwillTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_SeveranceAndNonCashLeaseImpairmentCostsMember" name="SeveranceAndNonCashLeaseImpairmentCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_ShareBasedCompensationAwardsExcludedFromComputationOfEarningsPerShareAmount" name="ShareBasedCompensationAwardsExcludedFromComputationOfEarningsPerShareAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="sxi_ShareBasedCompensationContinuingOperations" name="ShareBasedCompensationContinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_SwingLineLoanMember" name="SwingLineLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_WisconsinBasedNorthlakeEngineeringIncMember" name="WisconsinBasedNorthlakeEngineeringIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-amounts-reclassified-from-accumulated-other-comprehensive-income-loss-to-net-income-details" name="statement-statement-note-10-derivative-financial-instruments-amounts-reclassified-from-accumulated-other-comprehensive-income-loss-to-net-income-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-details-about-accumulated-other-comprehensive-income-loss-components-details" name="statement-statement-note-10-derivative-financial-instruments-details-about-accumulated-other-comprehensive-income-loss-components-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-fair-value-of-swaps-recognized-in-accrued-liabilities-and-in-other-comprehensive-income-loss-details" name="statement-statement-note-10-derivative-financial-instruments-fair-value-of-swaps-recognized-in-accrued-liabilities-and-in-other-comprehensive-income-loss-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-foreign-currency-exchange-contracts-details" name="statement-statement-note-10-derivative-financial-instruments-foreign-currency-exchange-contracts-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-gain-loss-recognized-in-comprehensive-income-on-derivative-financial-instruments-details" name="statement-statement-note-10-derivative-financial-instruments-gain-loss-recognized-in-comprehensive-income-on-derivative-financial-instruments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-10-derivative-financial-instruments-tables" name="statement-statement-note-10-derivative-financial-instruments-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-11-retirement-benefits-components-of-net-periodic-benefit-cost-details" name="statement-statement-note-11-retirement-benefits-components-of-net-periodic-benefit-cost-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-11-retirement-benefits-tables" name="statement-statement-note-11-retirement-benefits-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-13-earnings-per-share-computation-of-basic-and-diluted-earnings-per-share-details" name="statement-statement-note-13-earnings-per-share-computation-of-basic-and-diluted-earnings-per-share-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-13-earnings-per-share-tables" name="statement-statement-note-13-earnings-per-share-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-14-comprehensive-income-loss-components-of-accumulated-other-comprehensive-loss-details" name="statement-statement-note-14-comprehensive-income-loss-components-of-accumulated-other-comprehensive-loss-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-14-comprehensive-income-loss-tables" name="statement-statement-note-14-comprehensive-income-loss-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-16-industry-segment-information-assets-by-industry-segments-details" name="statement-statement-note-16-industry-segment-information-assets-by-industry-segments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-16-industry-segment-information-net-sales-and-income-loss-by-industry-segments-details" name="statement-statement-note-16-industry-segment-information-net-sales-and-income-loss-by-industry-segments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-16-industry-segment-information-tables" name="statement-statement-note-16-industry-segment-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-17-restructuring-summary-of-activity-in-reserves-related-to-restructuring-initiatives-details" name="statement-statement-note-17-restructuring-summary-of-activity-in-reserves-related-to-restructuring-initiatives-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-17-restructuring-summary-of-restructuring-expenses-by-segment-details" name="statement-statement-note-17-restructuring-summary-of-restructuring-expenses-by-segment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-17-restructuring-summary-of-severance-restructuring-and-related-charges-by-initiative-details" name="statement-statement-note-17-restructuring-summary-of-severance-restructuring-and-related-charges-by-initiative-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-17-restructuring-tables" name="statement-statement-note-17-restructuring-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-2-acquisition-components-of-fair-value-of-acquisitions-and-allocation-of-purchase-price-details" name="statement-statement-note-2-acquisition-components-of-fair-value-of-acquisitions-and-allocation-of-purchase-price-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-2-acquisitions-tables" name="statement-statement-note-2-acquisitions-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-3-discontinued-operations-assets-and-liabilities-related-to-discontinued-operations-details" name="statement-statement-note-3-discontinued-operations-assets-and-liabilities-related-to-discontinued-operations-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-3-discontinued-operations-earnings-losses-from-discontinued-operations-details" name="statement-statement-note-3-discontinued-operations-earnings-losses-from-discontinued-operations-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-3-discontinued-operations-tables" name="statement-statement-note-3-discontinued-operations-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-4-fair-value-measurements-fair-value-measurements-details" name="statement-statement-note-4-fair-value-measurements-fair-value-measurements-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-4-fair-value-measurements-tables" name="statement-statement-note-4-fair-value-measurements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-5-inventories-summary-of-inventories-details" name="statement-statement-note-5-inventories-summary-of-inventories-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-5-inventories-tables" name="statement-statement-note-5-inventories-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-6-goodwill-changes-to-goodwill-details" name="statement-statement-note-6-goodwill-changes-to-goodwill-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-6-goodwill-tables" name="statement-statement-note-6-goodwill-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-7-intangible-assets-summary-of-intangible-assets-details" name="statement-statement-note-7-intangible-assets-summary-of-intangible-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-7-intangible-assets-tables" name="statement-statement-note-7-intangible-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-8-warranties-changes-in-warranty-reserve-details" name="statement-statement-note-8-warranties-changes-in-warranty-reserve-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-8-warranties-tables" name="statement-statement-note-8-warranties-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-9-debt-longterm-debt-details" name="statement-statement-note-9-debt-longterm-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-9-debt-maturities-of-longterm-debt-details" name="statement-statement-note-9-debt-maturities-of-longterm-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sxi_statement-statement-note-9-debt-tables" name="statement-statement-note-9-debt-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
