General description Forgefix TechFast Composite Panels to Steel Hex Screws are specifically designed for joining composite panels to steel frame buildings. They feature a No.5 drill tip for self-drilling in heavy gauge steel up to 12.5mm, ensuring a secure and efficient installation. Technical specifications Diameter: 5.5mm Length: 105mm Insulation Thickness: 32-70mm Pack Size: 100 Drill Tip: No.5 Manufacturer Part Number: TFHW19CPSD55105H Corrosion Resistance: Elementech coating, salt spray tested to 1000 hours Compatibility and accessories Supplied with 19mm EPDM rubber washers Usage These screws are ideal for use in applications where composite panels need to be securely fastened to steel structures, providing durability and resistance to fire and corrosion. Other information