... '' 2)Material:brass,copper,bronze 3)Standard:GB,DIN,BS,ISO,ANSI(IFI) 4)Environmental Finish Products Information: DIN7981/ISO7049: ... Bolt, Nut, Screw, Washer, Nails, Rivet, Insert, Brass fitting,Threaded rod, etc.2Material: Copper, Bronze, Brass, Stainless steel, Aluminum, Grade.12 ... .9 steel3Standard :GB, DIN, BS, ASTM, ISO, ANSI(IFI), JIS, or as customer's drawing4Size:M3-M64 ...