Self Tapping Screw, Drywall Screw, Self Drilling Screw, Chipboard Screw, If you need any product of screws, just let me know Furniture screw or Confirmat screw or Connecting screw1.Head type:Flat Pozi ,Flat Hex Socket.2.Standard: ANSI, ISO, DIN, BS, JIS, AS 3.Material: Low carbon steel(C1008, C1010, C1012, C1015, C1018, C1022), 4.Surface: Zinc plated(yellow, black, green), black oxide, nickel ...