... Steel 2)Diameter:3.5-4.8,as required DIN Standard fastener-phil bugle head fine/coarse thread drywall screw1 ... ) Standard: DIN, ANSI, ISO, GB2) Material: Carbon Steel3) Diameter: 3.5- ... , grey phosphated, nickel, dacroment10) Packing:bulk,box, carton, , pallet Contact information:Yuyao Meigesi Fastener Co., LtdNingbo Rhino Import & Export Co.,Ltd ...