Self tapping screw flat phillips head carbon steel zincplated

Self tapping screw have various types of head driver,such as phillips head,pozi head,torx head ,torx plus head,slot head,hex washer head,square driver head,hex washer slot head .It is widely used in the field of furniture, engineering and construction，we use carbon steel C1022 raw material and do hardened process ,the screw have high strength and high self tapping ability.