1.Name: ASTM GR.2H High Strenth Heavy Hex Nuts 2.Meterial:Medium ... ;2.StandardDIN934,DIN985,DIN315,DIN1587, ISO,JIS& ANSI,GB ,BS,ASTM,Nonstandard nut (according to your order)etc.3.MaterialLow carbon ... steel;stainless steel,etc.4.GradeDIN:4-12: SAE GR.A-GR.85.FinishPlain;black; zinc plated(Cr,3+);zinc plated ...