General description ForgeFix TechFast Composite Panels to Steel Hex Screws are designed for joining composite panels to steel frame buildings. These screws 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 Size: 5.5 x 125mm Insulation Thickness: 32-90mm Pack Size: 100 Drill Tip: No.5 Diameter: 5.5mm Length: 125mm Manufacturer Part Number: TFHW16CPSD55125H EAN: 5028485195214 Usage These screws are ideal for use in construction projects where composite panels need to be securely fastened to steel structures. The specially designed compression control thread prevents damage and denting of the panels during installation. Other information Fire and corrosion resistant, protected by Elementech corrosion resistant coating, salt spray tested to 1000 hours. Supplied with 16mm EPDM rubber washers. Complies with EU Safety, Health and Environmental requirements.