Flat head machine screws 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, ... 4.Bronze: C51000, C52100, C54400, etc5.Iron: 1213, 12L14,12156.Aluminum: Al6061, Al6063 etc7,.Carbon steel: C1006,C1010,C1018,C1022,C1035K ... GB,DIN,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/ShippingSample ...