... 1.Bolt Size,M4-M100 2.Bolt Material,stainless steel,carbon steel 3.SGS,ISO ... ANSI B18.2.1, BSW, JSB ans ISO standard.2. Material:Carbon steel, Alloy steel, stainless steel or ... according require3. Grade of hex bolt:Metric standard: Grade 4 ... Grade6.8, Grade8.8, Grade10.9,Grade12.9.Inch standard: Grade2, Grade5, Grade8, B7.stainless steel , A2 ...