... bolts color:white,black,bright zinc plated,and so on material: stainless steel,iron,and so on. 1,Products DetailesMaterial1.Stainless ... C28000(CuZn40) 4.Bronze: C51000, C52100, C54400, etc 5.Iron: 1213, 12L14,1215 6.Aluminum: Al6061, Al6063 etc 7,.Carbon ... to tailor the fasteners for customersWe have advanced equipment and outstanding and production screw.The QA entire journey quality monitoring, ...