General description Forgefix TechFast Roofing Sheets to Steel Hex Screws are specifically designed for joining metal roofing panels to steel frame buildings. These screws ensure a secure and watertight connection, making them ideal for roofing projects involving metal sheets and steel structures. Technical specifications Size: 5.5 x 38mm Effective Thread Length: 21mm Pack Size: 100 screws per box Drill Tip: No.3 self-drilling tip Material: Steel with corrosion-resistant coating Includes: 16mm EPDM rubber washers Compatibility and accessories Compatible with metal roofing panels and steel framing Supplied with washers for sealing Installation Use a compatible drill or screwdriver to drive the screw into the steel sheet and frame Ensure the screw penetrates the steel fully for a secure fit Use the included EPDM washer to seal the joint and prevent water ingress Usage Ideal for roofing projects involving metal sheets and steel structures Suitable for outdoor applications due to corrosion