product name:pan head machine wire finished :black,white,RoHS. material:stainless steel-201, ... .Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40)4.Bronze: C51000, C52100, C54400, etc5.Iron: 1213, 12L14,12156.Aluminum ... fasteners for customersWe have advanced equipment and outstanding and production screw.