As a factory specialized in manufacturing and supplying high-quality fasteners, we offer Metal Galvanized Hexagonal Hex Head stainless steel self drilling screw roofing screw tek tapping screw With Rubber Washer. These screws are designed to provide maximum strength and durability for various roofing and construction applications. Made from premium-grade materials, these self-drilling screws are corrosion and rust-resistant, ensuring long-lasting performance even in harsh environments. Featuring a hexagonal hex head, these screws provide a secure and tight grip that won't slip or strip. The inclusion of a rubber washer also helps to prevent leaks and damage to the underlying material. Trust in our expertise and experience as we deliver superior quality and reliable performance with our top-tier fasteners.