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1、AerospaceIndustriesNATIONALAEROSPACESTANDARDAssociationOCOPYRIGHT2003AEROSPACEINDUSTRIESASSOCIATIONOFAMERICAINC.ALLRIGHTSRESERVEDFED.SUPCLASS53061.SCOPEANDCLASSES1.1Thisspeaficationdefinestherequirementsforalloysteelexternallythreadedfattenersprocuredunderpattnumbersliondrawingswhic
2、hrefertothisspecification.Typicallythesefastenersareusedfatension,shear,andtensiorbfatigueapplicationswhere180KSImiand108KSIFsuisdesiredwithaserviceternperaûnecapabilityto450"F.Receivingcontractorsmayrejectanymanwringiotwhitdoesnotconform.1.2Thecpecjficationindudesmechanicalproperty
3、requirementsforhnrodaccesoffastemsasfollows:TypeI-Tensionhead(hex,doublehex,12spline,etc.withoutaninternalorrecessdrive)andWs.TypeII-100"fuUflushheadandinternalwrenching(pan,fillister,brazier,etc.)headcunñgutaüon.1.3Wokmanshipoffastewsshallconformwithaircraftfastenermanufacturingpro
4、cesces.//^:^^#^~^^"~~::"^#$~@@""#:$@~*@~~""*~~~:^^$^@^~"#^:#\Recommendabons*forimprovementsorcorrecüonstothisspecificationshouldbedirededtoanNASCofaUsingcompanyortotheExeadjveSecretaryoftheNationalAerospaceStandardCommittee.1.4SpeciricatiOnslistedherein,oftheissueinemondateofinquir
5、y,areapattofthisspecificationtoextentindicated.Inthecaseofconflict,therequirementshereinshalltakeprecedence.1.5Unlessothennrisespecmed,partinventorymanufacturedbMIL-88831orpreVousreVicionsoftheapplicabledMngorspecificationmaybeproai@anduseduniilstockisdepleted.2.APPLICABLEDOCUMENTS2
6、.1.Induslrystandanlc2.1.1SocietyofautomotiveEngineersAMs6322SteelBars,Forgings,andRings,0.5Cr4.55Ni.25Mo(0.384.43C)(SAE8740)AMs6415SteelBars,Forgings,andTubing,0.80Cr-1.8N-025Mo(0.380.43C)(SAE4340)AMS6484SteelBars,Forgings,andTubing,0.8ocr-1.8Nd0.25Mo(0.384.43C)(SAE434û)AMsH6875,Hea
7、tTreatrnentofSteelRawMaterials2.1.2AmericanSocietyofMechanimlEngineersASME846.1SurfaceTexture(SurfaceRoughness,WavinesC,andLay)2.1.3AmericanSocietyforQualityControlASQCZ1.4SamplingProceduresandTablesforInspectionAttributesoTheinitialreleaseofthisdocumentsuDercedesMIL-B-883I,Revision
8、B.Amendment2~CUSTOD
