Din7504 self drilling screw 1. Standard: DIN, ANSI, GB 2. Size: ST2.9 to ST6.3 3. Material: Carbon Steel,stainless steel Din7504 self drilling screw1. Standard: DIN, ANSI, GB 2. Size: ST2.9 to ST6.3,Length: 3mm to 100mm3. Material: Carbon Steel,Stainless steel3.surface:Plain,Zinc,Black,H.D.G.4.head: Hex, Pan or CSK5.packing:general export packing poly bag cartons,then pallets6.delivery time: ...