General description Forgefix TechFast Metal Roofing to Timber Screws are designed for securely joining metal roofing panels to timber frame buildings. These screws feature a self-drilling T17 Gash Point, allowing for rapid installation without the need for pre-drilling. The specially designed compression control thread minimizes the risk of damage and denting to the panels. Technical specifications Size: 6.3 x 125mm Steel Thickness: 0.5-1.2mm Head Type: 8mm Hex Pack Size: 50 MPN: TFHW16GP63125 EAN: 5028485195436 Compatibility and accessories Supplied with 16mm EPDM rubber washers Other information Fire and corrosion resistant with Elementech corrosion resistant coating, salt spray tested to 1000 hours