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.