Self-drilling screws for heavy duty section steel are designed for fast, reliable fixing into thick steel without the need for pre-drilling. Manufactured for strength and durability, they are ideal for structural steelwork, cladding, roofing and other demanding construction applications. Available in silver finishes and A2 stainless steel bi-metal options, with or without EPDM washers, these screws provide excellent corrosion resistance and secure weather-tight seals for both internal and external use. Built to perform under high load, they ensure consistent penetration, strong holding power and long-lasting performance in tough environments.