1.Name: ASTM GR.2H High Strenth Heavy Hex Nuts 2.Meterial:Medium ... the specification of our Heavy Hex Nut? 1.NameASTM GR.2H High Strength Heavy Hex Nuts2.standardASTM3.MaterialMedium Carbon Steel4 ... ,DIN985,DIN315,DIN1587, ISO,JIS& ANSI,GB ,BS,ASTM,Nonstandard nut (according to your order)etc.3.MaterialLow ... ;stainless steel,etc.4.GradeDIN:4-12: SAE GR.A-GR.85.FinishPlain;black; zinc plated(Cr,3+);zinc ...