General description The TFHL5532 TechFast Hex Head Roofing Screws are a pack of 100 self-drilling screws designed for fixing cladding and sheet steel to light section steel purlins. They are ideal for light-duty roofing and cladding applications, providing a secure and weatherproof fastening solution. Technical specifications Size: 5.5 x 32mm Pack quantity: 100 screws Finish: Elementech coating for corrosion resistance Head type: Hexagon, self-drilling Washer diameter: 16mm Maximum fixing thickness: 14mm Suitable for steel purlins between 1.2mm and 3.6mm thick Compatibility and accessories Compatible with steel cladding and sheet metal Designed for fixing to light-duty steel purlins and structural steel Installation Use a compatible power drill or screwdriver to drive the screw into steel surfaces Ensure the rubber washer is properly seated to form a weatherproof seal Pre-drill if necessary, especially in thicker or harder materials, to facilitate easier installation Usage Ideal for