saej892mv001

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.QUESTIONSREGARDINGTHISDOCUMENT:(724)772-8512FAX:(724)776-0243TOPLACEADOCUMENTORDER;(724)776-4970FAX:(724)776-0790SAEWEBADDRESShttp://www.sae.orgCopyright1996SocietyofAutomotiveEngineers,Inc.Allrightsreserved.PrintedinU.S.A.SURFACEVEHICLE400CommonwealthDrive,Warrendale,PA15096-0001STANDARDSubmittedforrecognitionasanAmericanNationalStandardJ892MREV.AUG96Issued1964-08Revised1996-08SupersedingJ892a(R)PUSH-ONSPRINGNUTSMETRICSERIES—GENERALSPECIFICATIONSForeword—ThisDocumenthasalsochangedtocomplywiththenewSAETechnicalStandardsBoardformat.1.Scope—Includedhereinaregeneral,dimensional,andperformancespecificationsforthosetypes,styles,andsizesofsteelstampedPush-OnSpringNutsrecognizedasSAEstandard.Thesenutsareintendedforgeneralusewheretheengagementonthematingmetalorplasticstudsandinsomecasesscrewboltthreadsisconsideredadequateforthefasteningjointapplication.ItshouldbenotedthatPush-OnSpringNutshavingothercharacteristicsandconfigurationsareavailableandmanufacturersshouldbeconsulted.Fortheinchequivalentofthisdocument,seeSAEJ892.2.References2.1ApplicablePublication—Thefollowingpublicationformsapartofthisspecificationtotheextentspecifiedhereinunlessotherwisespecified.ThelatestissueofSAEpublicationsshallapply.2.1.1SAEPUBLICATION—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEJ892—Push-OnSpringNutsInchSeries—GeneralSpecifications3.DimensionalTolerance—Toleranceondimensionsareinthetables.4.Boss—Sizeandformationofbossandotherdetailshallbesuchastoassemblereadilyandfunctionsatisfactorilywiththespecifiedstud.5.Material—Springsteelsuitablyprocessedtomeetthehardnessrequirementsofthisspecification.6.Hardness—HardnessshallbeasfollowsinTable1:TABLE1—HARDNESSMaterialThicknessHVUpto0.90380-515SAEJ892MRevisedAUG96-2-7.Finish—Springnutsarenormallysuppliedwithcorrosion-resistantfinishasspecifiedbypurchaser.Nutssubjectedtocorrosionpreventivetreatmentwhichmightinducehydrogenembrittlementshallbebakedorotherwisetreatedtoobviatesuchembrittlement.8.Workmanship—Springnutsshallbefreefromcracks,burrs,splits,loosescale,oranyotherdefectswhichmightaffecttheirserviceability.9.ApplicationandDesign—Wherenutistofunctiononlyasalockingmeans(Figure1,Table2)Style1isrecommended.Wheregreaterareaofloaddistributionisarequirement,i.e.,nutistofunctionalsoasspannerwasher,StyleIIisrecommended.TheLightSeriesareforuseonplasticstuds,theMediumSeriesareforuseonsoftmetalstuds,andtheHeavySeriesareforuseonhardenedmetalorchromiumplatedstuds.Tables3and4andFigures2and3,Push-OnSpringNutswillbeusedlikewise.Acorntypes,closedandopentopstylesareshowninTable5andFigure4.Notetherestrictedstudheightisdesignatedbyrodpenetration.Table6andFigures5and6,Push-OnSpringBoltRetainerspertaintonutsappliedontoscrewandboltthreads.Blindpush-onspringnutandstudrequirementsarelistedinTables7and8andFigures7and8.Thestudretainedstylemustbepreassembledontothestudbeforeinsertingintoapanelwhereasthepanelretainedgoesintothepanelandthenthestudisinserted.10.AssemblyConsiderations—Sinceperformanceofpush-onspringnutsisdependentuponthestudstowhichtheyareapplied,itisessentialthatstuddiametersandplatingrecommendationsassetforthinFigure9andTable9beadheredtoascloselyaspossible.Theactualstudlengthisdeterminedbyaddingthethicknessofmatingpanelorpanels"T"throughwhichthestudprotrudestothefactorstabulatedunder"C"(theminimumstudprotrusionrequiredfornormalinstallation).Itmaybenecessarytoincreasethisfactortoprovideadequatestudprotrusionwhereuncompressedmaterialsormismatchoftrimcontoursareencountered.Itshouldbenotedbyusersdesiringtostandardizeonstuddesignsthatthestudsapplicabletoself-threadingstampednutsmaybeutilizedforpush-onspringnutswhereeconomicsjustifyandtheadditionalstudprotrusionisnotobjectionable.HeavySeriesNutsareusedonroundstudsonly.Allothernutsinthisdocumentmaybeusedoneitherroundor"D"shapedstuds.Nutsareusedonroundstudsinapplicationswheretheassemblyispermanentandon"D"shapedstudswheredisassemblyisaconsideration.FIGURE1—PUSH-ONSPRINGNUTS—RECTANGULARARCHEDSAEJ892MRevisedAUG96-3-TABLE2—DIMENSIONSOFPUSH-ONSPRINGNUTS(FIGURES1ATO1C)NominalStud(1)SizemmStyleSeries(2)ANutLength±0.50mmBNutWidth±0.25mmCArchHeightMaxmmCArchHeightMinmmEStockThickness±0.038mm1.6ILight9.655.590.640.130.301.6IMedium9.655.590.640.130.361.6IHeavy9.655.590.640.130.431.6IILight14.228.641.020.250.301.6IIMedium14.228.641.020.250.361.6IIHeavy14.228.641.020.250.432.4ILight11.435.841.020.250.302.4IMedium11.435.841.020.250.362.4IHeavy11.435.841.020.250.432.4IILight17.789.651.270.510.302.4IIMedium17.789.651.270.510.362.4IIHeavy17.789.651.270.510.433.2ILight14.737.871.020.250.303.2IMedium14.737.871.020.250.363.2IHeavy14.737.871.020.250.433.2IILight11.4312.702.031.270.303.2IIMedium11.4312.702.031.270.363.2IIHeavy11.4312.702.031.270.434.0ILight14.229.651.020.250.304.0IMedium14.229.651.020.250.364.0IHeavy14.229.651.020.250.434.0IILight22.3514.221.911.140.304.0IIMedium22.3514.221.911.140.364.0IIHeavy22.3514.221.911.140.434.8ILight15.759.651.520.760.304.8IMedium15.759.651.520.760.434.8IHeavy15.759.651.520.760.514.8IILight24.8914.222.031.270.304.8IIMedium24.8914.222.031.270.434.8IIHeavy24.8914.222.031.270.515.5ILight15.7511.181.270.510.305.5IMedium15.7511.181.270.510.436.3ILight15.7511.181.270.510.306.3IMedium15.7511.181.270.510.436.3IHeavy15.7511.181.270.510.516.3IILight24.8915.752.411.650.306.3IIMedium24.8915.752.411.650.436.3IIHeavy24.8915.752.411.650.518.0ILight17.5312.700.760.368.0IMedium17.5312.701.520.760.51SAEJ892MRevisedAUG96-4-FIGURE2—PUSH-ONSPRINGNUTS—ROUND—FLAT9.5ILight19.0514.221.520.760.369.51Medium19.0514.221.520.760.511.SeeTable9forstuddimensions2.SeeSection9ApplicationandDesignTABLE2—DIMENSIONSOFPUSH-ONSPRINGNUTS(FIGURES1ATO1C)(CONTINUED)NominalStud(1)SizemmStyleSeries(2)ANutLength±0.50mmBNutWidth±0.25mmCArchHeightMaxmmCArchHeightMinmmEStockThickness±0.038mmSAEJ892MRevisedAUG96-5-TABLE3A—PUSH-ONSPRINGNUTS—ROUND—FLAT(SEEFIGURE2)Nom(1)StudDiamm1.SeeTable9forstuddimensionsSeriesADiameter±0.13mmBToothBase±0.25mmCHeight±0.18mmEMetalThickness±0.038mm3.2Light9.55.81.10.253.2Medium9.55.81.30.334.0Light11.18.11.20.254.0Medium11.18.11.50.33—Light—————Medium————5.0Light11.18.11.30.255.0Medium11.18.11.50.38—Medium————6.0Light13.59.91.90.516.3Light13.58.61.50.306.3Medium13.58.61.70.438.0Light15.911.61.50.388.0Medium15.911.61.80.53—Light—————Heavy————10.0Light19.013.91.40.4310.0Heavy19.013.91.90.6811.0—22.316.22.50.76——————13.0—25.418.52.720.89TABLE3B—PUSH-ONSPRINGNUTS—ROUND—FLATNom(1)StudDiammSeriesDTeethInsideDia±0.08mmFPerformanceForceRequirementsmax.PushOntoStudNFPerformanceForceRequirementsmin.RemovalFromStudN3.2Light2.9655733.2Medium2.911515444.0Light3.6662654.0Medium3.6110794—Light————Medium———5.0Light4.7668825.0Medium4.71101764—Medium———6.0Light5.711117806.3Light6.011017646.3Medium6.019826468.0Light7.51762866SAEJ892MRevisedAUG96-6-FIGURE3—PUSH-ONSPRINGNUTS—ROUNDARCHED8.0Medium7.52653969—Light————Heavy———10.0Light9.6222289210.0Heavy9.6378489511.0—10.73316615—————13.0—12.270688201.SeeTable9forstuddimensionsTABLE3B—PUSH-ONSPRINGNUTS—ROUND—FLAT(CONTINUED)Nom(1)StudDiammSeriesDTeethInsideDia±0.08mmFPerformanceForceRequirementsmax.PushOntoStudNFPerformanceForceRequirementsmin.RemovalFromStudNSAEJ892MRevisedAUG96-7-TABLE4A—PUSH-ONSPRINGNUTS—ROUNDARCHED(SEEFIGURE3)Nom(1)StudDiamm1.SeeTable9forstuddimensionsSeriesADiameter±0.25mmBToothBaseDiameter±0.25mmCHeight±0.38mmDToothInsideDia±0.08mm3.2Light9.55.81.62.93.2Medium9.55.81.72.93.2Heavy9.55.81.82.94.0Light11.08.12.13.66.3Light13.59.92.46.06.3Medium13.59.92.66.08.0Light15.911.62.77.58.0Medium15.911.62.97.5TABLE4B—PUSH-ONSPRINGNUTS—ROUNDARCHED(CONTINUED)Nom(1)StudDiamm1.SeeTable9forstuddimensionsSeriesEMetalThickness±0.38mmFPerformanceForceRequiredmax.PushOntoStudNFPerformanceForceRequiredmin.TensionOnStudNFPerformanceForceRequiredmin.RemovalFromStudN3.2Light0.2566665733.2Medium0.3311011015443.2Heavy0.4324335317644.0Light0.25662202656.3Light0.3011026517646.3Medium0.4313250726468.0Light0.3817835328928.0Medium0.532655303969SAEJ892MRevisedAUG96-8-FIGURE4—PUSH-ONSPRINGNUTS—ACORNTABLE5A—PUSH-ONSPRINGNUTS—ACORN(SEEFIGURE4)Nom(1)StudDiamm1.SeeTable9forstuddimensionsTopStyleAHexmmBAcrossHexCornersmmCHeightmmDToothInsideDia±0.18mm4.0closed8.7/8.58.8/8.47.7/7.23.66.3closed11.1/10.912.8/12.49.7/9.26.06.3open11.1/10.912.8/12.47.7/7.26.06.3closed14.3/14.016.5/15.912.5/12.06.06.3open14.3/14.016.5/15.910.3/9.86.08.0closed14.3/14.016.5/15.912.3/11.87.48.0open14.3/14.016.5/15.99.9/8.67.4SAEJ892MRevisedAUG96-9-TABLE5B—PUSH-ONSPRINGNUTS—ACORN(CONTINUED)Nom(1)StudDiamm1.SeeTable9forstuddimensionsTopStyleEMetalThickness±0.038mmFRodPenetrationmmGPerformanceForceRequiredMaximumPushOnNGPerformanceForceRequiredMinimumRemovalN4.0closed0.306.1/3.314113236.3closed0.437.1/4.81985296.3open0.434.8min1985296.3closed0.618.9/4.82209706.0open0.614.8min2209708.0closed0.519.1/5.62438828.0open0.515.6min243882FIGURE5—PUSH-ONSPRINGBOLTRETAINERFIGURE6—PUSH-ONSPRINGBOLTRETAINERSAEJ892MRevisedAUG96-10-TABLE6A—PUSH-ONSPRINGBOLTRETAINER(SEEFIGURES5AND6)MachineScreworBolt(1)Diamm1.Theimpressionwillengageanypitchofthreadcoarseandfinemetricseriesfordiametersshown.StyleDDiameter±0.25mmHHeight±0.38mmEMetalThickness±0.038mm3.538.71.200.254.039.51.240.255.0311.11.650.306.0112.72.000.256.3112.72.000.258.0115.92.100.3310.0219.82.40.3812.0221.42.60.3814.0223.83.10.38TABLE6B—PUSH-ONSPRINGBOLTRETAINER(CONTINUED)MachineScreworBolt(1)Diamm1.Theimpressionwillengageanypitchofthreadcoarseandfinemetricseriesfordiame-tersshown.StyleGMinimumBoltorScrewProtrusionmmFPerformanceMaximumPush-OnForceNFPerformanceMinimumRemovalForceN3.533.617404.033.622505.034.025656.014.825906.314.825908.015.63010010.025.03015012.026.03030014.026.030300SAEJ892MRevisedAUG96-11-FIGURE7—PUSH-ONSPRINGNUTS—BLIND,STUDRETAINEDSTYLETABLE7A—PUSH-ONSPRINGNUTS—BLIND,STUDRETAINEDSTYLE(SEEFIGURE7)Nom(1)StudDiamm1.SeeTable9forstuddimensionsAPanelHoleDia±0.08mmTPanelThickness±0.10mmBKneeDia±0.25mmCLength±0.20mmDToothInsideDia±0.20mm3.24.751.025.217.112.63.24.751.405.217.522.63.24.751.785.217.922.64.05.51.786.058.333.4TABLE7B—PUSH-ONSPRINGNUTS—BLIND,STUDRETAINEDSTYLE(CONTINUED)Nom(1)StudDiamm1.SeeTable9forstuddimensionsEMetalThickness±0.038mmFPerformanceForceRequiredMaximumPush-OnFastenerOntoStudNFPerformanceForceRequiredMaximumSnapAssemblyIntoPanelNFPerformanceForceRequiredMinimumRemoveAssemblyFromPanelN3.20.3660265973.20.3660265973.20.3660265974.00.366026597SAEJ892MRevisedAUG96-12-FIGURE8—PUSH-ONSPRINGNUTS—BLIND,PANELRETAINEDTABLE8A—PUSH-ONSPRINGNUTS—BLIND,PANELRETAINED(SEEFIGURE8)Nom(1)StudDiamm1.SeeTable9forstuddimensionsAPanelHoleDia±0.08mmTPanelThickness±0.10mmBKneeDia±0.25mmCLength±0.20mmDToothInsideDia±0.20mm3.24.751.025.947.372.7TABLE8B—PUSH-ONSPRINGNUTS—BLIND,PANELRETAINED(CONTINUED)Nom(1)StudDiamm1.SeeTable9forstuddimensionsEMetalThickness±0.038mmFPerformanceForceRequiredMaximumPushFastenerIntoPanelNFPerformanceForceRequiredMaximumPushStudIntoAssemblyNFPerformanceForceRequiredMinimumRemoveStudsFromPanelN3.20.36110154154SAEJ892MRevisedAUG96-13-FIGURE9—RECOMMENDEDSTUDDESIGNTABLE9—DIMENSIONSOFRECOMMENDEDSTUDS(FIGURES9AAND9B)NominalStudDiametermmA(1)StudDiameterMinmm1.Diameterlimitsincludethicknessofplatingonstuds.ChromiumornickelplatingispermissibleonlyonstudstobeusedwithHeavySeriesNutsandthenitisrecommendedthatplatingthick-nesschangelengthofdiecaststudsbeheldtowithin0.038mmwhereverandthatinnocaseshouldtheplatingthicknessexceed0.076mm.A(1)StudDiameterMaxmmDStudWidthMinmmDStudWidthMaxmmSTaperMaxmm1.61.51.61.11.40.052.42.32.51.82.00.053.23.13.22.42.70.054.03.94.03.03.30.044.84.74.83.73.90.045.04.95.13.94.10.045.55.55.64.34.60.046.36.36.45.05.20.048.07.88.06.26.50.039.59.49.67.57.80.0310.09.910.18.28.50.0311.111.011.28.89.00.0312.712.612.810.010.30.0313.012.913.110.310.60.03SAEJ892MRevisedAUG96-14-11.Notes11.1MarginalIndicia—The(R)isfortheconvenienceoftheuserinlocatingareaswheretechnicalrevisionshavebeenmadetothepreviousissueofthereport.Ifthesymbolisnexttothereporttitle,itindicatesacompleterevisionofthereport.PREPAREDBYTHESAEFASTENERSCOMMITTEESAEJ892MRevisedAUG96Rationale—Notapplicable.RelationshipofSAEStandardtoISOStandard—Notapplicable.Application—Itshouldbenotedthatpush-onspringnutshavingotherconfigurationsareavailableandmanufacturersshouldbeconsulted.ReferenceSectionSAEJ892—Push-OnSpringNutsInchSeries—GeneralSpecificationsDevelopedbytheSAEFastenersCommittee