... head machine wire finished :black,white,RoHS. material:stainless steel-201,304,and so on,Iron 1,Products DetailesMaterial1.Stainless ... 12L14,12156.Aluminum: Al6061, Al6063 etc7,.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045 8, Alloy steel: SCM435,10B21Specification& gaugeM0.8-M10Surface FinishingZn ... equipment and outstanding and production screw. Phillips pan head screw with blue zinc plating