ASTM-A307-2004

Designation:A307–04StandardSpecificationforCarbonSteelBoltsandStuds,60000PSITensileStrength1ThisstandardisissuedunderthefixeddesignationA307;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecification2coversthechemicalandmechanicalrequirementsofthreegradesofcarbonsteelboltsandstudsinsizes1⁄4in.(6.35mm)through4in.(104mm).Thefastenersaredesignatedby“Grade”denotingtensilestrengthandintendeduse,asfollows:GradeDescriptionGradeABoltsandstudshavingaminimumtensilestrengthof60ksi(414MPa)andin-tendedforgeneralapplica-tions,GradeBBoltsandstudshavingatensilestrengthof60to100ksi(414to690MPa)andintendedforflangedjointsinpipingsystemswithcastironflanges,andGradeCNonheadedanchorbolts,eitherbentorstraight,hav-ingpropertiesconformingtoSpecificationA36/A36M(tensilestrengthof58to80ksi(400to550MPa))andintendedforstructuralan-choragepurposes.1.1.1Thetermstudsincludesstudstock,sometimesre-ferredtoasthreadedrod.1.2Thisspecificationdoesnotcoverrequirementsformachinescrews,threadcutting/formingscrews,mechanicalexpansionanchorsorsimilarexternallythreadedfasteners.1.3SuitablenutsarecoveredinSpecificationA563.Unlessotherwisespecified,thegradeandstyleofnutforeachgradeoffastener,ofallsurfacefinishes,shallbeasfollows:FastenerGradeandSizeNutGradeandStyleAA,C,1⁄4to11⁄2in.A,hexA,C,over11⁄2to4in.A,heavyhexB,1⁄4to4in.A,heavyhexANutsofothergradesandstyleshavingspecifiedproofloadstresses(Speci-ficationA563,Table3)greaterthanthespecifiedgradeandstyleofnutarealsosuitable.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5SupplementaryRequirementS1ofanoptionalnatureisprovided,whichdescribesadditionalrestrictionstobeappliedwhenboltsaretobewelded.Itshallapplyonlywhenspecifiedintheinquiry,order,andcontract.1.6TermsusedinthisspecificationaredefinedinTermi-nologyF1789unlessotherwisedefinedherein.2.ReferencedDocuments2.1ASTMStandards:3A36/A36MSpecificationforCarbonStructuralSteelA153/A153MSpecificationforZincCoating(Hot-Dip)onIronandSteelHardwareA370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA563SpecificationforCarbonandAlloySteelNutsA706/A706MSpecificationforLow-AlloySteelDe-formedBarsforConcreteReinforcementA751TestMethods,Practices,andTerminologyforChemicalAnalysisofSteelProductsB695SpecificationforCoatingsofZincMechanicallyDepositedonIronandSteelD3951PracticeforCommercialPackagingF606TestMethodsforDeterminingtheMechanicalProp-ertiesofExternallyandInternallyThreadedFasteners,Washers,andRivetsF1470GuideforFastenerSamplingforSpecifiedMechani-calPropertiesandPerformanceInspectionF1789TerminologyforF16MechanicalFasteners2.2ANSI/ASMEStandards:B1.1UnifiedScrewThreads4B18.2.1SquareandHexBoltsandScrews4B18.24.1PartIdentifyingNumber(PIN)CodeSystem51ThisspecificationisunderthejurisdictionofASTMCommitteeF16onFastenersandisthedirectresponsibilityofSubcommitteeF16.02onSteelBolts,Nuts,Rivets,andWashers.CurrenteditionapprovedAug.1,2004.PublishedAugust2004.Originallyapprovedin1947.Lastpreviouseditionapprovedin2003asA307–03.2ForASMEBoilerandPressureVesselCodeapplicationsseerelatedSpecifi-cationSA-307inSectionIIofthatCode.3ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.4AvailablefromAmericanNationalStandardsInstitute(ANSI),25W.43rdSt.,4thFloor,NewYork,NY10036.5AvailablefromAmericanSocietyofMechanicalEngineers(ASME),ASMEInternationalHeadquarters,ThreeParkAve.,NewYork,NY10016-5990.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.2.3MilitaryStandard:MIL-STD105SingleSamplingPlanforNormalInspec-tion63.OrderingInformation3.1Ordersforexternallythreadedfasteners(includingnutsandaccessories)underthisspecificationshallincludethefollowing:3.1.1ASTMdesignationandyearofissue,3.1.2Nameofproduct,boltsorstuds;andboltheadstyle,thatis,hexorheavyhex,3.1.3Grade,thatis,A,orB,orC.Ifnogradeisspecified,GradeAisfurnished.3.1.4Quantities(numberofpiecesbysizeincludingnuts),3.1.5Fastenersizeandlength,3.1.6Washers—Quantityandsize(separatefrombolts),3.1.7ZincCoating—Specifythezinc-coatingprocessre-quired,forexample,hot-dip,mechanicallydeposited,ornopreference(see4.5).3.1.8OtherFinishes—Specifyotherprotectivefinish,ifrequired.3.1.9Specifyifinspectionatpointofmanufactureisre-quired,3.1.10Specifyifcertifiedtestreportisrequired(see8.2),and3.1.11Specifyadditionaltesting(8.3)orspecialrequire-ments.3.1.12Forestablishmentofapartidentifyingsystem,seeANSI/ASMEB18.24.1.4.MaterialsandManufacture4.1Steelforboltsandstudsshallbemadebytheopen-hearth,basic-oxygen,orelectric-furnaceprocess.4.2Boltsshallbeproducedby