... Features: 1) Standard: GB, DIN, ANSI/ASME, BS, JIS, Au, non-standard 2) Material: carbon steel, stainless steel, brass, Nuts Features ... : 1) Standard: GB,DIN, ANSI/ASME, BS, JIS, Au, non-standard2) Material: carbon steel, stainless steel, brass, alloy steel 3 ... , bridge, construction5)We supply high strength nuts,bolts Heavy Hex Nut