1.According to Standard ISO898-2, 2.ROHS,DIN,ISO;STAM standard; 3.Size; M3~100; 4.Material; Carbon steel;alloy steel 1.NameCarbon Steel Zinc plated Hexagon Bolt2.standardDIN934/936 ASTM,JIS,BS,Nonstandard bolt(according to your order),etc3.MaterialCarbon Steel,low carbon steel; medium carbon steel(1008/1035/1045);Alloy carbon steel,ect4.Class4;6;8;10;12;Gr2,5,85.FinishZinc plated(Cr,6+);,Black, ...