self-tapping screw

DIN7981&DIN7982 pan head self taping screws; Flat head self taping screws; hex washer head self taping screws; wafer head self taping screws; discription: Place of origin: China Material: C-1022 Low/Medium carbon, STAINLESS STELL, 201, 304, etc. SIZE: M3.5-M6.3, #6-#14 LENGH: 11-165, 7/16''-7'' Surface Finishing: Black oxide, hot dip galvanized, zinc, yellow zinc plated, Nickel, brass plated. Dacromet, as customer's like. Packing: Boxes or bulk, DIY packing(plastic boxes), poly bag.