Designation:A354−17´2StandardSpecificationforQuenchedandTemperedAlloySteelBolts,Studs,andOtherExternallyThreadedFasteners1ThisstandardisissuedunderthefixeddesignationA354;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—Table4waseditoriallycorrectedinNovember2017.ε2NOTE—13.1.5waseditoriallycorrectedinNovember2018.1.Scope*1.1Thisspecification2coversthechemicalandmechanicalrequirementsofquenchedandtemperedalloysteelbolts,studs,andotherexternallythreadedfasteners4in.andunderindiameterforapplicationatnormalatmospherictemperatures,wherehighstrengthisrequiredandforlimitedapplicationatelevatedtemperature(Note1).Anyalloysteelcapableofmeetingthemechanicalandchemicalpropertiessetforthinthisspecificationmaybeused.NOTE1—Forbolts,studs,orotherexternallythreadedfasteners,tobeusedatelevatedtemperatures,refertoSpecificationA193/A193M.1.2Twostrengthlevelsarecovered,designatedGradesBCandBD.Selectionwilldependupondesignandthestressesandserviceforwhichtheproductistobeused.NOTE2—Quenchedandtemperedalloysteelboltsforstructuralsteeljointsupthrough11⁄2in.indiameterarecoveredinSpecificationF3125/F3125M.Forfastenerdiametersizesabove11⁄2in.,GradeBCmaybeconsideredforstructuralsteelboltingwheretensilestrengthabove120ksiisnecessaryandGradeBDmaybeconsideredforstructuralsteelboltingwheretensilestrengthabove150ksiisnecessary.Inthisevent,additionalrequirementsofSpecificationF3125/F3125M,suchasheadsize,lubricant,andmagneticparticleinspection,shouldbecarefullyconsidered.1.3NutsarecoveredinSpecificationA563.Unlessother-wisespecified,thegradeandstyleofnutforeachgradeoffastenershallbeasfollows:GradeofFastenerandSurfaceFinishNutGradeandStyleABC,plain(orwithacoatingofinsufficientthick-nesstorequireover-tappednut...
