ISO 04579-2021.docx

INTERNATIONA1.STANDARDISO4579editionFirSt2021-11AerospaceDrives,interna1.,TORX(三)PARA1.OBEdriveGeometrica1.definition,gagingandtechnica1.requirementsAeronautiqueetespaceEmpreintes,TORX(B)PARA1.OBE<entrainementDefinitiongeometrique,ca1.ibrageetexigencestechniques1S0Rtov202'I>)COPYRIGHTPROTECTEDDOCUMENT©ISO2021IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InyM1.tta0Dmk<nroni(ncm11ni10tf1.*Mqn1.C6pW11opypMRationmaytheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1.oworISO'smemberbodyinthecountr)oftherequester.f),WV>fifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.227490111觥曲ite：图洲跳触OQrgPub1.ishedinSwitzer1.andTab1.e1(continued)DrivecodeDrivesizedescriptorARecessdiameterBRecessinscf1.)eddiameterIIiH(Thedimensionsinthistab1.earerounded.Thereforethegenera1.formu1.aforconvertinginchesintommcannotbeused.4.3RecessdrivedesignationTherecessdrivedesignationsha1.1.beasshowninthefo1.1.owingexamp1.e:ISO4579-02SDrivecode(025Drivecodeas1.istedinTab1.e1)Drivestandard5Recessinspection5.1 GagingequipmentTherecessisinspectedwithapenetrationgage(seeFigure2).recessdepth(perfastenerstandard)。gogagee1.ementdiameter(seeTab1.e2)no-gogagee1.ementdiameter(see41.>1.e-2)nogorecessdepth(PVrfastenerstandard)1 go-gageidentificationmarking2 no-gogageidentificationmarking3 fastener4 indicator5 body6 bushing7 e1.ement8 gogagec1.ement9 no-gogagee1.ement10 gogageassemb1.y11 nogF(ire.ssttyGoandno-gorecessdepthgages,penetrationtypegageassemb1.y3ihegagedrtijnpftntionf1.tjiftftttbHappearonthesurfaceoftheassemb1.ybody,a1.ongwiththedriveEXAMP1.E1:Forgogage：25S1TORX®PARA1.OBE®25-SD1-770Go5.2GagingprocedureEXAMP1.E2:Forno-gogage:25SITORX®PARA1.OBE®25-SDI-710No-GoUsingtheappropriatesizegage(seeTab1.e2),checkthezeroadjustmentagainstaknownf1.atsurface.thertgiwjp.*Nh11mto114ictrordhffesePheEfootingtit3rHtvhinptibit5bo(omperapp1.icationfastenerstandard.5.3PenetrationtypegagedimensionsmetricandinchTab1.e2-Go/No-gogagedimensions*Thedimensionsinthistab1.earcrounded.Thereforethegenera1.formu1.aforconvertinginchesintommcannotbeused.6Fastenerrecesstorquetest6.1 Fixturedirections.Theapp1.yingsha1.1.spccificdendIoadtendencyapp1.yingtorquebitbothcamc1.ockwisetheanti-c1.ockwise6.2 Torquewrench/torsionmachineTorsionmachinesorotherpowertoo1.ssha1.1.conformtoapp1.icab1.erequirements.DrivesizedescriptorGogagee1.ementseriesnumberDGogage;UiameterNo-gogagee1.ementseriesnumberKNo-gogagediameterI1.1.iri1.Thetestfixturesha1.1.becapab1.eofmaintaininga1.ignmentwiththefasteneraxis,ensuringnonrotationofthefastener,fixturenotresistanyandOfthedriverinoutofandrecessduringthetestHandtorquewrenchsha1.1.conformtoapp1.icab1.erequirements.6.3 DriverbitThedriverbitsha1.1.beappropriatefortherecessbeingtestedandsha1.1.beinaccordancewiththe641.s*entss飒men4580.sssftOfb删风StenePrfastene11n加盟df1.K.beInOdifiedtoensurenon-rotationduringtesting.The6.5 Fastenerrecesstorquetestprocedurea) P1.acethefastenerinasuitab1.etestfixture.b) *M*teg;SwirtMHrtjwiMitbtheitMht>1.m(1.r>Wifiutofc) App1.yanend1.oadasspecifiedinNASM1312-25.Thetota1.endInadsha1.1.heeffectiveatbit/fastenerjuncture.d) Withthebitmatedtotherecessandtheend1.oadapp1.ied(butnotorqueapp1.ied),zerothetorquemeasuringdeviceifapp1.icab1.e.e) Aptfe,tHa1.耶HHeiedS1.(MS<tti*caNi3MHMdnMrti(>nstandard,shHX)bbNt*tMmdR)e*<nti1.(*MmunmMMmumtorqueva1.uesCanbefoundinTab1.e3.ORecordtheapp1.iedtorqueandmodeoffai1.ure,ifany.g) Disengagethefasteneranddriver.Repeath) fastener.stepsa)throughg),app1.yingtorqueintheremova1.direction,usingthesamedriverbitand6.6Fastenerrecesstorqueva1.uesThetorqueva1.uesgiveninTab1.e3representtheminimumtorsiona1.strengthva1.uesofthedriverHhpenideritngitd龄OriVESe'hgjukandsttattionUie<ifhe(1.sy5teniintke(fastettehertrt>nsfrdrivesystemstrength.However,headandfastenergeometrysha1.1.beconsideredtose1.ecttheappropriatepenetrationdepth.Refertospecificfastenerstandardsforspecifictorquetestva1.ues.Tab1.e3Optimumrecesstorqueva1.uesDrivesizedescriptorTorquemin.Torquemin.8SI4,0135.59SI5,1145.2Tab1.e3(continued)DrivesizedescriptorTorquemin.Torquemin.100S1.385034100I1.OSI470041600