ASTM-a490-2012

Designation:A490–12AmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.:M253StandardSpecificationforStructuralBolts,AlloySteel,HeatTreated,150ksiMinimumTensileStrength1ThisstandardisissuedunderthefixeddesignationA490;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoverstwotypesofquenchedandtempered,alloysteel,heavyhexstructuralboltshavingatensilestrengthof150to173ksi.1.2Theseboltsareintendedforuseinstructuralconnec-tions.TheseconnectionsarecoveredundertherequirementsoftheSpecificationforStructuralJointsUsingSpecificationA325orA490bolts,approvedbytheResearchCouncilonStructuralConnections;endorsedbytheAmericanInstituteofSteelConstructionandbytheIndustrialFastenerInstitute.21.3Theboltsarefurnishedinsizes1⁄2to11⁄2in.,inclusive.Theyaredesignatedbytypedenotingchemicalcompositionasfollows:TypeDescriptionType1MediumcarbonalloysteelType2Withdrawnin2002Type3Weatheringsteel1.4Thisspecificationprovidesthatheavyhexstructuralboltsshallbefurnishedunlessotherdimensionalrequirementsarespecifiedonthepurchaseorder.1.5TermsusedinthisspecificationaredefinedinTermi-nologyF1789unlessotherwisedefinedherein.1.6Formetricbolts,seeSpecificationA490MClasses10.9and10.9.31.7Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.8ThefollowingsafetyhazardscaveatpertainsonlytotheTestMethodsportion,Section12ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:3A194/A194MSpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBothA325SpecificationforStructuralBolts,Steel,HeatTreated,120/105ksiMinimumTensileStrengthA354SpecificationforQuenchedandTemperedAlloySteelBolts,Studs,andOtherExternallyThreadedFastenersA490MSpecificationforHigh-StrengthSteelBolts,Classes10.9and10.9.3,forStructuralSteelJoints(Metric)A563SpecificationforCarbonandAlloySteelNutsA751TestMethods,Practices,andTerminologyforChemi-calAnalysisofSteelProductsD3951PracticeforCommercialPackagingE384TestMethodforKnoopandVickersHardnessofMaterialsE709GuideforMagneticParticleTestingE1444PracticeforMagneticParticleTestingF436SpecificationforHardenedSteelWashersF606TestMethodsforDeterminingtheMechanicalProp-ertiesofExternallyandInternallyThreadedFasteners,Washers,DirectTensionIndicators,andRivetsF788/F788MSpecificationforSurfaceDiscontinuitiesofBolts,Screws,andStuds,InchandMetricSeriesF959SpecificationforCompressible-Washer-TypeDirectTensionIndicatorsforUsewithStructuralFastenersF1136SpecificationforZinc/AluminumCorrosionProtec-tiveCoatingsforFastenersF1470PracticeforFastenerSamplingforSpecifiedMe-chanicalPropertiesandPerformanceInspection1ThisspecificationisunderthejurisdictionofASTMCommitteeF16onFastenersandisthedirectresponsibilityofSubcommitteeF16.02onSteelBolts,Nuts,RivetsandWashers.CurrenteditionapprovedApril1,2012.PublishedApril2012.Originallyapprovedin1964.Lastpreviouseditionapprovedin2011asA490–11.DOI:10.1520/A0490-12.2AvailablefromAmericanInstituteofSteelConstruction(AISC),OneE.WackerDr.,Suite700,Chicago,IL60601-2001,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.CopyrightASTMInternationalProvidedbyIHSunderlicensewithASTMLicensee=UniversityofMichigan/5967164002NotforResale,07/24/201207:00:23MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,``,`,,,`,,``,`,`,,,```,,``,-`-`,,`,,`,`,,`---F1789TerminologyforF16MechanicalFastenersF2328TestMethodforDeterminingDecarburizationandCarburizationinHardenedandTemperedThreadedSteelBolts,ScrewsandStudsF2833SpecificationforCorrosionProtectiveFastenerCoatingswithZincRichBaseCoatandAluminumOrganic/InorganicTypeG101GuideforEstimatingtheAtmosphericCorrosionResistanceofLow-AlloySteels2.2ASMEStandards:4B1.1UnifiedScrewThreadsB18.2.6FastenersforUseinStructuralApplicationsB18.24PartIdentificationNumber(PIN)CodeSystemStandardforB18FastenerProducts2.3IFIStandard:5IFI144TestEvaluationProceduresforCoatingQualifica-tionIntendedforUseonHigh-StrengthBolts3.OrderingInformation3.1Ordersforheavyhexstructuralboltsunderthisspeci-ficationshallincludethefollowing:3.1.1Quantity(numberofpiecesofboltsandaccessories);3.1.2Size,includingnominalboltdiameter,threadpitch,andboltlength.Thethreadlengthshallnotbe