... M2-M36; Variety of materials:Carbon steel, Stainless steel,copper; Fine surface trearment: Plain, zinc plated etc.2. ... We commit ourself to smile to each customers. Product name copper screwMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, ... Bronze: C51000, C52100, C54400, etc5.Iron: 1213, 12L14,12156.Aluminum: Al6061, Al6063 SpecificationM2-M36ColorPlain, blue plated, white plated, yellow ...