NASM 33537-2002 螺纹护套安装规范

AEROSPACENATIONALAEROSPACESTANDARDINDUSTRIESASSOCIATION0COPYRIGHT2MNAEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,INCALLRIGHTSRESERVEDPROCUREMENTSPECIFICATIONNONEFEDSUPCLASS5340CLASSIFICATIONPARTSTANDARDSHEET1OF13TITLEINSERT,SCREWTHREAD,HELICALCOIL,INCHSERIES,COARSEANDFINETHREAD,STANDARDASSEMBLYDIMENSIONSFOR12344GENERALINSTRUCTIONSDESCRIPTIONHELICALCOILINSERTSARESCREWTHREADBUSHINGSCOILEDFROMDIAMONDSHAPEDCROSSSECTIONWIRETHEYARESCREWEDINTOTAPPEDHOLESTOFORMNOMINALSIZEINTERNALTHREADSINSERTSAREINSTALLEDBYTORQUINGTHROUGHADIAMETRALTANGWHICHISNOTCHEDFORTANGREMOVALMATERIALASSPECIFIEDONTHEDRAWINGTHREADSASSEMBLEDINSERTS,CLASSES28AND38,ARECONTROLLEDBYTHETOLERANCERANGEOFTHETAPPEDHOLEINTOWHICHINSERTISFITTEDDUETOTHERADIUSONTHECRESTOFTHEINSERTATTHEMINORDIAMETER,THEASSEMBLEDINSERTWILLACCEPTEXTERNALTHREADEDPARTSWHICHARETHREADEDTOMILS8879THEGRIPCOILORCOILSOFTHESCREWLOCKINGINSERTARESHAPEDTOPROVIDEAPREVAILINGTORQUEWHENTHESCREWISINSTALLEDINTHEASSEMBLEDINSERTTAPPEDHOLE60“UNIFIEDINTERNALTHREADFORMWITHTHEMINIMUMMAJORDIAMETERBASEDONATRUNCATIONTO0125DESIQNATIONFORTAPPEDHOLETHEDRAWINGNOTEFORTHETAPPEDHOLE,PERTABLEIV,THATWILLACCEPTTHEHELICALCOILINSERTSHALLBEINACCORDANCEWITHTHEFOLLOWINGEXAMPLESEXAMPLE1312524UNF3BHELICALCOILINSERTTHDPERMS3353767MINFULLTHDDEPTH312524UNF38HELICALCOILINSERTTHDTHRUPERMS33537BELOWSURFACEREMOVETANGINSTALLINSEET7515TURNSFORBLINDHOLEBASEDON2DIAMETERENGAGEMENTMINORDIAMETERDRILLDEPTHTOLERANCEAPPROXO60ORASOTHERWISEAPPROPRIATEFORTHRUHOLEWITHINSERTBEINGASSEMBLEDBASEDON2DIAMETERENGAGEMENTLISTOFCURRENTSHEETSTHEINITIALRELEASEOFTHISDOCUMENTSUPERSEDESMS33537REVISIONEAMENDMENT1PARTNUMBERSREMAINMS33537THIRDANGLEPROJECTIONAICUSTODIANNATIONALAEROSPACESTANDARDSCOMMITTEEUSEOFORRELIANCEUPONTHISDOCUMENTORANYNATIONALAEROSPACESTANDARDISENTRELYVOLUNTARYAIADOESNOTOUALINSUPPLIERSORCERTIFCONFORMANCEOFITEMSPROCLREDUHDERHATIONALAEROSPACESTANDARCSAIAMAGSNOREPRESENTATIONORCLAIMRESPECTINGI1ITHE_SITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR2THEWSTENCEOFORAPPLICABILITYTHERETOOFPATENTORTRADEMARKRIGHTSCOPYRIGHTAEROSPACEINDUSTRIESASSOCIATIONOFAMERICAINCPROVIDEDBYIHSUNDERLICENSEWITHAIA/NASNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,AEROSPACENATIONALAEROSPACESTANDARDINDUSTRIESASSOCIATIONOCOPYRIGHT2002AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,INCALLRIGHTSRESERVEDEXAMPLE2MINORDIA32153288X791851DEEP3639DIAX115“125“CSK312524UNF3BHELICALCOILINSERT67MINFULLTHDDEPTHMINORDIA32153288THRU3639DIAX115“125“CSK312524UNF3BHELICALCOILINSERTPITCHDIA33953421THDPERMS33537FORTHDTHRUPERMS33537FORPITCHDIA33953421MAJORDIA3666MINBELOWSURFACETANGLESSINSERTSMAJORDIA3666MININSTALLINSERT7515TURNSREMOVETANGNOTREQUIREDWITH56616263631632633REDUCEDFIRSTCOILTHEFIRSTCOILOFTHEFREEINSERTADJACENTTOTHETANGHASBEENREDUCEDINDIAMETERONTHELARGERINSERTSTOFACILITATESTARTINGTHEINSERTINTOTHETAPPEDHOLEDIMENSIONALDATAFORFREERUNNINGANDSCREWLOCKINGINSERTSHAVINGANOMINALLENGTHOF1,15,2,25,AND3TIMESTHENOMINALMAJORDIAMETEROFTHESCREWTHREAD,DIMENSIONALDATAFORTHEFOLLOWINGFEATURESHAVEBEENCALCULATEDANDARELISTEDINTABLEIVNOMINALLENGTHLNLENGTHOFASSEMBLEDINSERTLTAPPEDHOLEDIAMETERSV,VI,V2DEPTHOFDRILLINGANDTAPPINGFP,FB,ANDHCOUNTERSINKDIAMETERSMREQUIREDBOLTTHREADPROJECTIONJANDKFORALLOTHERNONSTANDARDVARIATIONSINNOMINALLENGTH,THEABOVEDIMENSIONSSHALLBECALCULATEDFROMTHEFORMULASGIVENINTABLEIII,USINGROUNDINGPROCEDURESCONTAINEDINASTME38084SEETABLEIFORMSPARTNUMBERSANDNOMINALLENGTHSOFAVAILABLEINSERTSINSERTLENGTHSELECTIONFORAPPLICATIONSWHERETHETENSILESTRENGTHOFTHEINSTALLEDINSERTISACONSIDERATION,TABLEIIWILLAIDINAPPLYINGTHESTANDARDDESIGNPRACTICEOFRELATINGTHETENSILESTRENGTHOFTHEBOLTMATERIALAGAINSTTHESHEARSTRENGTHOFTHEPARENTORBOSSMATERIALTODEVELOPTHEFULLLOADVALUEOFTHEBOLTRATHERTHANSTRIPPINGTHEPARENTORTAPPEDMATERIALINUSINGTHISTABLE,THEFOLLOWINGFACTORSMUSTBECONSIDEREDACTUALBOLTTENSILESTRENGTH,PARTICULARLYINTHELOWERBOLTTENSILERANGES,MAYBESIGNIFICANTLYHIGHERTHANTHENOMINALVALUESTHISSHOULDBECONSIDEREDININSERTLENGTHSELECTIONTHEPARENTMATERIALSHEARSTRENGTHSAREFORROOMTEMPERATUREELEVATEDTEMPERATURESSIGNIFICANTLYREDUCESHEARSTRENGTHVALUESCOMPENSATIONSHOULDBEMADEWHENREQUIREDWHENPARENTMATERIALSHEARSTRENGTHFALLSBETWEENTWOTABULATEDVALUES,USETHELOWEROFTHETWOSHEET2USEOFORRELIANCEUPONTHISDOCUMENTORANYNATIONALAEROSPACESTANDARDISENTIRELYVOLUNTARYAIADOESNOTCUALIFYSUPPLIERSORCERTIFYCONFORMANCEOFITEMSPROCUREDUNDERNATIONALAEROSPACESTANDARDSAIAMAKESNOREPRESENTATIONORCLAIMRESPECTING1THESUITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR2THEEXISTENCEOFORAPPLICABILITYTHERFTOOFPATENTORTRADEMARKRIGHTSCOPYRIGHTAEROSPACEINDUSTRIESASSOCIATIONOFAMERICAINCPROVIDEDBYIHSUNDERLICENSEWITHAIA/NASNOTFORRESALENOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,AEROSPACENATIONALAEROSPACESTANDARDOCOPYRIGHT2002AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,INCALLRIGHTSRESERVEDINDUSTRIESASSOCIATION78991921ODEPTHOFRECOMMENDEDMINIMUMTAPDRILLHOLETHETABULATEDDEPTHOFBLINDHOLEFORTHREADTAPPINGALLOWSSUFFICIENTDEPTHFORASSEMBLEDINSERTTOPCOILTOBE15PITCHESBELOWBOSSSURFACEFORINSERTSIZES3125ANDSMALLER,DRILLDEPTHFPPROVIDESFORMINIMUMFULLTHREADDEPTHH,USINGAPLUGTAPHAVING4PITCHESTAP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