Roofing Screws 4.8x19mm (RAL 7024 Graphite) Self drilling Metal to With Hexagon Head and Sealing washer, Lap Fixings for Tin Roofing, Stitching Corrugated Panels, Siding (250 pcs)

Self-Drilling Roofing Screws (Tech Screws): Designed with a sharp self-drilling tip for fast, easy installation without the need for pre-drilling—perfect for securing tin roofing, corrugated panels, siding, and wall panels. Hex Head with EPDM Washer: The hexagonal head ensures maximum torque transfer for a tight fit, while the UV-resistant EPDM washer seals out moisture and protects against galvanic corrosion. Anti-Corrosion Protection: Coated with a durable 12 µm electro-galvanized zinc layer for superior rust resistance; ideal for both indoor and outdoor applications. Also available with SQ CERAMIC coating for higher corrosion categories (C1–C4). Versatile Expansion Lap Screws: Suitable for attaching sheet metal to steel substrates, mounting metal panel sidelaps (lap or stitch screw use), and installing façades, timber elements, and garage doors. Heavy-Duty Construction: Special hardening technology ensures these roofing screws are highly resistant to mechanical stresses and harsh weather, delivering long-term reliable performance in demanding environments.