China Screw manufacturers Product Description Self-tapping screws are screws designed to tap their own threads as they are driven into materials such as wood, plastic, or metal. This eliminates the need for a pre-drilled hole and makes them ideal for applications where drilling a hole is difficult or impossible. Product Specification MaterialStainless steel, carbon steel, or other materials Thread Size#2 to #14 or custom Length5mm to 150mm or custom FAQ Q: How do self-tapping screws work? A: Self-tapping screws have a sharp, pointed end that allows them to cut their own threads as they are driven into materials. Q: What materials are self-tapping screws typically used with? A: Self-tapping screws can be used with a variety of materials, including wood, plastic, and metal. Q: What advantages do self-tapping screws have over other types of screws? A: Self-tapping screws eliminate the need for pre-drilled holes, which makes them ideal for applications where drilling a hole is difficult or impossible. China Screw manufacturers website:http://www.hxsunrise-metal.com/screw/