General description This product is a set of roofing screws designed for attaching metal roofing sheets to steel frames. The Forgefix TechFast Roofing Sheets to Steel Hex Screws are made with a No.5 drill tip suitable for self-drilling into heavy gauge steel up to 12.5mm thick. They are fire resistant and feature a corrosion-resistant coating, ensuring durability and safety. Technical specifications Size: 5.5 x 50mm Effective Thread Length: 27mm Pack Size: 100 Drill Tip: No.5 Self-drilling capability: Up to 12.5mm thick steel Compatibility and accessories Supplied with 16mm EPDM rubber washers for a secure and weatherproof seal Other information Protected by Elementech corrosion-resistant coating, salt spray tested to 1000 hours MPN: TFHW16SD5550H EAN: 5028485195757