自窃听的螺丝

Self-tapping screw is used for tapping plastics or wood.Full thread and half-full thread are both available.The end could be flat, sharp or cutting-pointed. Material used could be carbon steel, stainless steel, aluminum, brass, plastics and so on. It can be hardened as request. The surface treatment could be nickel plating, zinc plating, chrome plating, oxidization, anodization, painting coated, etc. It depends on customers' requirements.