... 12.9 hexagon bolt1) Various kinds of bolts available2) Can be made with different tensile strength, such as Class ... .9, inperial grade 2, 5, 8 and 103) Can be supplied with different finish, such as bright, zinc ... plated, hot-dip galvanized, mechanical plating, black4) Can be made with different standards, such as ISO, DIN, ... ANSI, BS and special standard according to the drawing HEX BOLTS