ThreadE（Grip Range） Min.Max.HHole Size +0.1 0KAB+0.07 -0.1LM40.5 2.0 6.5 6.0 0.8 9.0 5.9 11.0 M50.5 2.58.0 7.0 1.0 10.0 6.9 13.0 M60.5 3.08.5 9.0 1.35 12.7 8.9 15.0 M81.0 3.510.5 11.0 1.5 16.0 10.9 18.0 M101.0 3.512.5 13.0 1.7 18.0 12.9 21.0 M121.0 4.014.0 15.0 1.7 2

Small Head Full Hexagonal BodyThreadE（Grip Range） Min.Max.HHole Size +0.1 0KAB+0.07 -0.1LM30.5 2.0 0.5 2.55.5 5.0 0.5 6.0 4.9 8.5 10.0M40.5 2.5 2.5 5.06.7 6.0 0.5 7.0 5.9 11.0 13.5M50.5 3.0

ThreadE（Grip Range） Min.Max.HHole Size +0.1 0KAB+0.07 -0.1LM40.5 2.0 6.5 6.0 0.8 9.0 5.9 11.0 M50.5 2.58.0 7.0 1.0 10.0 6.9 13.0 M60.5 3.08.5 9.0 1.35 12.7 8.9 15.0 M81.0 3.510.5 11.0 1.5 16.0 10.9 18.0 M101.0 3.512.5 13.0 1.7 18.0 12.9 21.0 M121.0

Wing Nut Long TypeSIZEG （mm）F （mm）B （mm）L （mm）E （mm）Package (Pcs/Bag)Approx.Weight (Kg/1000Pcs)AISI 304 Cost (RMB/Pcs)AISI 316 Cost (RMB/Pcs)M619.0 44.7 16.2 8.6 4.8 100 17.5 2.8 4.0 M820.0 44.7 16.4 8.8 4.9 100 17.0 3.0 4.2 M1023

Wing NutSIZEK （mm）L （mm）dk （mm）M （mm）B （mm）Y （mm）Package (Pcs/Bag)Approx.Weight (Kg/1000Pcs)AISI 304 Cost (RMB/Pcs)AISI 316 Cost (RMB/Pcs)M49.8 22.6 2.0 6.0 7.0 8.0 100.0 3.1 1.7 2.6 M512.8 27.6 2.7 7.3 8.0 10.0 100.0

Material requirements for boltsPerformance levelMaterials and Heat treatmentChemical compositionTempering temperatureCPSB 1)℃minmaxmaxmaxmaxMin3.6 2)Carbon steel一一0.20.050.060.003一一4.6 2)一一0.550.050.060.003一一4.8 2)5.60.130.550.050.060.003一一5.8 2)一一0.550.050.066.8 2)6.8 2)Low carbon alloy steels (suc