Designation:F593−13aStandardSpecificationforStainlessSteelBolts,HexCapScrews,andStuds1ThisstandardisissuedunderthefixeddesignationF593;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoverstherequirementsforstainlesssteelbolts,hexcapscrews,andstuds0.25to1.50in.,inclusive,innominaldiameterinanumberofalloysincommonuseandintendedforserviceapplicationsrequiringgeneralcorrosionresistance.1.2Sevengroupsofstainlesssteelalloysarecovered,includingthirteenaustenitic,twoferritic,fourmartensitic,andoneprecipitationhardening.GroupAlloysAConditionB1304,305,384,304L,(CW)coldworkedC18-9LW,302HQD2316,316L(CW)coldworkedC3321,347(CW)coldworkedC4430E(CW)coldworkedC5410F(H)hardenedandtempered6431(H)hardenedandtempered7630(AH)agehardenedAUnlessotherwisespecifiedontheinquiryandorder,thechoiceofanalloyfromwithinagroupshallbeatthediscretionofthefastenermanufacturer(see6.1).BSee4.2foroptions.CSizes0.75in.andlargermaybehotworkedandsolutionannealed,providedtheboltscomplywiththecoldworked(CW)mechanicalpropertyrequirements.DWhenapprovedbythepurchaser,Alloys303,303Se,orXM1maybefurnished.EWhenapprovedbythepurchaser,Alloy430Fmaybefurnished.FWhenapprovedbythepurchaser,Alloys416or416Semaybefurnished.1.3Supplementaryrequirementsofanoptionalnatureareprovided,applicableonlywhenagreeduponbetweenthemanufacturerandthepurchaseratthetimeoftheinquiryandorder.1.4Suitablenutsforusewithbolts,hexcapscrews,andstudsincludedinthisspecificationarecoveredbySpecificationF594.Unlessotherwisespecified,allnutsusedonthesefastenersshallconformtotherequirementsofSpecificationF594,shallbeofthesamealloygroup,andshallhaveaspecifiedminimumproofstressequaltoorgreaterthanthespecifiedminimumfull-sizetensilestrengthoftheexter...
