Material: carbon steel , stainless steel, nylon, brass Size:M4-M48 8-320mm Standard: DIN, ANSI, JIS fastners hexagon nuts ... , brass etc.Surface: galvanized, plain, black, hotdipped galvanized etc.Size: M4-M48,8-320mmStandard: DIN,JIS, ANSIPacking: 25kgs/carton, then in ...