Roofing Screw be used in building or construction. To avoid head broken and getting rusty after using for a while, this part should be passed salt spray test and hydrogen embrittlement test strictly. Our company is a professional manufacturer in hardware industry in Asia. We are specialized in Roofing Screw.
1. Material: carbon steel, stainless steel.
2. Head style: hex. washer head, hex. flange washer head.