Din7504 self drilling screw with EPDM washer 1. Standard: DIN, ANSI, GB 2. Size: ST2. ... ST6.3 3. Material: Carbon Steel,st Din7504 self drilling screw with EPDM washer1. Standard: DIN, ANSI, GB 2. Size: ST2.9 ... ,Stainless steel3.surface:Plain,Zinc,Black,H.D.G.4.head: Hex, Pan or CSK5.packing:general export packing poly bag cartons ...