... Material: Iron, stainless steel SUS 316, SUS304, SUS201 and SUS200, copper and etc.Hex bolt Material: Iron, stainless steel SUS 316 ... SUS200, copper and etc. Bolt Standard: DIN 933, DIN 931, DIN 558, JIS ISO, BS, ANSI...etc Surface Finish: Various of finish is ... available, such as Zinc plate, plain finish, copper plate, nickel plate Grade: 4.8 ...