美國螺栓及栓釘規范介紹1RelativespecificationsonboltsA153-HotdipgalvanizingspecificationA193-AlloysteelandstainlesssteelboltingmaterialsforhightemperatureserviceA194-CarbonandalloynutsforboltsforhighpressureandhightemperatureserviceA307-Carbonsteelboltsandstudsrangingfrom1/4"through4"diameterA320-AlloysteelandstainlesssteelboltingmaterialsforlowtemperatureserviceA325-Structuralbolts,steel,heattreated,120/105ksiminimumtensilestrengthA354-Quenchedandtemperedalloybolts,studs,andotherexternallythreadedfastenersA449-QuenchedandtemperedsteelboltsandstudsA490-Structuralbolts,alloysteel,heattreated,150ksitensilestrengthA563-StandardspecificationforcarbonandalloysteelnutsF1554-AnchorboltsdesignedtoanchorstructuralsupportstoconcretefoundationsF2329-Newspecificationcoveringhotdipgalvanizing2HighstrengthboltasperASTM3ItemGrade8.810.94.6/5.8/9.8/12.9boltA325MA490MF568MnutA563MwasherF436MDTIF959MClass8.8highstrengthboltasperA325M4TypeDescriptionRemarkType1Boltsmadeofmedium-carbonsteelProvidedinmostcaseType2Boltsmadefromwhatisgenerallydescribedaslow-carbonmartensitesteelWithdrawnNovember1991Type3BoltsmadeofsteelhavingatmosphericcorrosionresistanceandweatheringcharacteristicsClass8.8highstrengthboltasperA325M5Ordinaryordering/deliverycondition1heavyhexstructural

boltsshallbefurnished2Zinc-coatedboltsandnutsshallbeshippedinthesame

containerClass8.8highstrengthboltasperA325M6BoltNutWasherDTItypefinishclassfinishfinishclassfinishType1&2Plain(noncoated)8Sor8S3plainplain8.8PlainType1&2Zinc-coated8sZinc-coatedZinc-coated8.8Zinc-coatedType3plain8S3plainPlain(weatheringsteel)8.8PlainMaterialsandManufactureofhighstrengthboltasperF568M7ItemClauseMaterialsChemicalComposition5Mechanicalproperty6ManufactureHeading

practicethreadingheattreatmentzinc-coating4.5hot-dip–A153classCmechanicaldeposition-B695class50ChemicalrequirementsexactedfromF568M8MechanicalrequirementsexactedfromF568M910Class10.9highstrengthboltasperA490M11TypeDescriptionDia.rangeRemarkType1Boltsmadeofmedium-carbonsteelM16-M36ProvidedinmostcaseType2Boltsmadefromwhatisgenerallydescribed

aslow-carbonmartensitesteelM16-M24Withdrawnin2002Type3BoltsmadeofsteelhavingatmosphericcorrosionresistanceandweatheringcharacteristicsM16-M36Class10.9highstrengthboltasperA490M12BoltNutWasherDTItypefinishclassfinishfinishclassfinishType1&2Plain(noncoated)10Sor10S3plainplain10.8plainType3plain10S3plainplain(weatheringsteel)10.8plainQualityAssuranceofMechanicalRequirements13Method

TestitemInspectionfrequencyRemarkProductionLotMethodOptionI:tensilestrength(wedgetest),hardnesseachlotThemanufacturershallhavetheoptionofwhichprocedurewillbefollowedShippingLotMethodOptionII:tensilestrength,yieldstrength,reductionofarea,elongation,hardnessNumberoftestsforQualityAssuranceofMechanicalRequirements14QualityAssurancemethodNumberofPiecesinProductionLotNumberofSpecimensProductionLotMethod800andless801to80008001to3500035001to150000150001andover123813QualityAssurancemethodNumberofPiecesinShippingLotNumberofSpecimensShippingLotMethod150andless151to280281to500501to12001201to32003201to1000010001andover123581320MechanicalrequirementsexactedfromF568M15Inspectionofsurfacediscontinuityandburst16GradeTestitemInspectionmethodspecificationClass8.8astoA325MHeadburstVisualInspectionA325MAQLof2.5(隨機抽取50,發現6%以上不合格即拒絕本批)Class10.9astoA490MSurfaceDiscontinuitiesMagneticParticleorEddy-currentinspectionandVisualInspectionF788MAQLof0.25(隨機抽取50,發現一個不合格即拒絕本批)BurstVisualInspectionF788MAQLof2.5(隨機抽取50,發現6%以上不合格即拒絕本批)Productmarking17TypeProductMarkingClass8.8asperA325MClass10.9asperA490MType18S10SType28S10SType38S310S3BoltNutOrderingInformationofclass8.8boltasperA325M1Quantity(numberofpiecesofboltsandaccessories)2Nameofproducts,includingaccessoriessuchasnutsandwasherswhendesired3ZincCoating—Specifythezinc-coatingprocessrequired,forexample,hot-dip,mechanicallydeposited,ornopreference4OtherFinishes—Specifyotherprotective?nishifrequired5Dimensionsincludingnominalboltdiameter,threadpitch,andlength.Forboltsofdimensionalrequirementsotherthanheavyhexstructuralbolts,itisnormallynecessarytospecifygriplength.18OrderingInformationofclass8.8boltasperA325M6Typeofbolt(thatis,Type1,2,or3)6.1Whenthebolttypeisnotspeci?ed,eitherType1orType2maybesuppliedattheoptionofthemanufacturer.Type3boltsmaybesuppliedbythemanufacturerifagreeduponbythepurchaser6.2Whereelevatedtemperatureapplicationsareinvolved,Type1boltsshallbespeci?edbythepurchaser6.3Whenatmosphericcorrosionresistanceisrequired,Type3boltsshallbespeci?edbythepurchaser6.4Whenzinc-coatedhigh-strengthstructuralboltsarespeci?ed,theboltsshallbeeitherTypes1or2,atthemanufacturer’soption,unlessotherwiseorderedbythepurchaser7ASTMdesignationandyearofissue8Anyspecialrequirements9Forestablishmentofapartidentifyingsystem,seeASMEB18.24.119OrderingInformationofclass10.9boltasperA490M1Quantity(numberofpiecesofboltsandaccessories)2Nameofproducts,includingaccessoriessuchasnutsandwasherswhendesired3Dimensions,includingnominalboltdiameter,threadpitch,andlength.Forboltsofdimensionalrequirementsotherthanheavyhexstructuralbolts(seesection1.4)itisnormallynecessarytospecifygriplength4Typeofbolt(thatis,Type1,2,or3)4.1Whenthebolttypeisnotspeci?edType1,2or3boltsmaybesuppliedbythemanufacturer.4.2Whenatmosphericcorrosionresistanceandweatheringcharacteristicsarerequired,Type3boltsshouldbespeci?edbythepurchaser.5ASTMdesignationanddateofissue6Whetherproofloadtestsarerequired7Specifyiftestreportsarerequired20SteelboltandStudasperA30721GradeDescriptionApplicationrangeGradeAminimumtensilestrengthof414MPageneralapplicationsGradeBtensilestrengthof414to690MPa?angedjointsinpipingsystemswithcastiron?anges(法蘭管道連接)GradeCNonheadedanchorbolts,eitherbentorstraight,havingpropertiesconformingtoA36/A36M(tensilestrengthof400to550MPa)structuralanchoragepurposesAsofAugust2007,gradeChasbeenreplacedbyspecificationF1554grade36BoltNutCompatibilityChart22BoltNutwasherGradesizespecificationgradesizeA,C?~1?F563AHexF844A,C1?~4F563AHeavyhexF844B?~4F563AHeavyhexF844SupplementaryRequirementS1isappliedwhenboltsaretobeweldedhexbolt與heavyhexbolt在美制緊固件中分別為六角螺栓和重型六角螺栓，主要區別是1)頭部尺寸有區別，重型六角螺栓頭部對邊和厚度都比六角螺栓大2)重型六角螺栓螺紋長度比六角螺栓短ChemicalrequirementsofboltandstudasperA30723HadnessrequirementsofboltandstudasperA30724TensilerequirementsofboltandstudasperA30725GradeCnonheadedanchorboltsshallbetestedusingmachinedspecimensandshallconformtothetensilepropertiesspeci?edforbarsinSpeci?cationA36/A36MOrderingInformationofsteelbolt