✅Durable and Long-Lasting Material: Self tapping screws for metal are made from high-quality 1022A carbon steel with a hardness of 560-660 HV, providing exceptional strength and durability. The silver coating on self drilling screws for metal complies with the AS 3566 Class 4 standard and has passed a rigorous 1500‑hour salt spray test, ensuring excellent corrosion and rust resistance. This makes the metal roofing screws durable for up to 50 years (excluding coastal areas) ✅Easy Installation with Strong Grip: Self tapping screws feature a unique design with a hexagonal head and #3 self-drilling point, suitable for under 6mm thick metal and wood panels (excluding stainless steel).These metal roof screws eliminate the need for pre-drilling—simply drive them directly into the material. Self drilling screws are built to perform reliably under extreme conditions, from high heat to cold and moisture, saving you time and effort ✅Durable EPDM Rubber Washer: Each self tapping sheet metal screws is equipped with a high-quality EPDM washer, which with stands high and low temperatures, ozone, and oil. These washers on the metal screws self tapping maintain excellent flexibility and durability, ensuring long-term use even in harsh environments ✅Versatile & Efficient roofing Screws: These hexagonal head self tapping screws for metal are perfect for securing wood and metal materials. Widely used in construction, manufacturing, engineering, and assembly, they are the ideal choice for corrugated metal and polycarbonate roofing, wall panels, and fencing ✅Meticulous Packaging & Complete Accessories: Every pack is carefully inspected to ensure the exact quantity of roofing screws is included. Additionally, we provide a free Hex socket head with each purchase, ensuring compatibility with standard socket tools, making your work easier and more efficient ✅Customer Support: YOKUSO team is available 24/7 to provide excellent service. If you have any questions or concerns, please feel free to contact us. We prioritize customer satisfaction and a positive shopping experience. We offer free refunds in the case of any quality issues Our Carbon Steel Self-Drilling Roof Screws are meticulously crafted and designed for the harshest environments, representing the culmination of years of dedicated engineering and innovation. These screws are the ideal choice for construction workers facing extreme weather conditions, whether it's the scorching heat of summer or the biting cold of winter. Product Features: Premium Material: Made from high-quality 1022A carbon steel with a hardness of 560-660HV, ensuring the screws have exceptional strength and durability. Extended Lifespan: The silver coating conforms to AS 3566 Class 4 standards and has undergone rigorous testing with 1500 hours of salt spray, guaranteeing the screws' corrosion resistance and long-term stability. Self-Drilling Technology: No pre-drilling required, the screws drill directly into the material, saving time and effort, and increasing work efficiency. Quick Installation: The hexagonal head design and #3 drill point provide stable grip and precise drilling, ensuring fast and secure installation. Versatile Applications: Suitable for a variety of construction scenarios, including corrugated metal roofing, wall panels, and fencing, meeting diverse construction needs. High-Quality Washers: Equipped with EPDM rubber washers that resist extreme temperatures, ozone, and oil, maintaining long-term flexibility and sealing performance. Complete Accessories: Each pack of screws is strictly inspected to ensure nothing is missing, and comes with a free socket head adapter to ensure compatibility with your tools, enhancing construction convenience. Choose our Carbon Steel Self-Drilling Roof Screws for a product that is carefully designed and manufactured to meet the challenges of any construction project. We promise to deliver high-quality fasteners to help you complete every job with confidence.