AMERICANNATIONALSTANDARDMetricSlottedHexNutsANSIB18.2.4.3M-1979.__----GovernmentKeyWords:Nut,Slotted,Hex-MetricREAFFIRMED1995FORCURRENTCOMMITTEEPERSONNELPLEASESEEASMEMANUALAS-11SECRETARIATSOCIETYOFAUTOMOTIVEENGINEERSTHEAMERICANSOCIETYOFMECHANICALENGINEERSPUBLISHEDBYTHEAMERICANSOCIETYOFMECHANICALENGINEERSUnitedEngineeringCenter345East47thStreetNewYork,N.Y.10017REAFFIRMED2017DateofIssuance:May15,1980Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.THEAMERICANSOCIETYOFMECHANICALENGINEERSCopyright01980byAllRightsReservedPrintedinU.S.A.ERRATAtoANSIB18.2.4.3M-1979METRICSLOTTEDHEXNUTSPage4,inthestandardshallbereplacedwiththesecondpageofthisErrataPage7,forMATERIALANDFINISHCODEAandB,change0.005mmtoread5.1pmTHEAMERICANSOCIETYOFMECHANICALENGINEERS345East47Street,NewYork,N.Y.10017M0119EMay1981AMERICANNATIONALSTANDARDMETRICSLOTTEDHEXNUTSANSI618.2.4.3M-1979t-IsThreadPitchM5x0.88.007.78M6x110.009.78M8x1.2513.0012.73MlOx1.516.0015.73M12x1.7518.0017.73M14x221.0020.67M16x224.0023.67M20x2.530.0029.16M24x336.0035.00M30x3.546.0045.00M36x455.0053.80toPara.I4Refer'MlOx1.5I15.00I14.73N3-Table1DimensionsofSlottedHexNutsEWidthAcrossCorners7MThickness-Max-5.105.707.509.3012.0014.1016.4020.3023.9028.6034.70-5-Min4.805.407.148.9411.5713.4015.7019.0022.6027.3033.10--DwIFBear-IingFace1DiaUnslottadThicknessMinMax6.93.28.93.511.64.414.65.216.67.319.68.622.59.927.713.333.215.442.718.151.123.76I10-Min2.93.24.14.96.98.O9.312.214.316.822.4--WidthofSlotWasherFaceThicknessMaxMinMaxMin2.01.4-2.4la--2.92.3-3.42.8-4.03.2-4.33.5-5.345-------0.411TotalRunoutofBearingSurfaceFIMMax0.300.330.360.390.420.450.480.560.640.760.89-60.39-"SeePara.2.2inGeneralData.4AmericanNationalStandardsCommitteeB18forthestandardizationofbolts,screws,nuts,rivetsandsimilarfastenerswasorganizedin-March1922,as'SectionalCommitteeB18undertheaegisoftheAmericanEngineeringStandardsCommittee(latertheAmericanStandardsAssociation,thentheUnitedStatesofAmerica...
