Hex Head Self Drilling Screws for Light Section Steel

This 5.5mm x 38mm hex head self drilling screw is a popular choice for fixing roofing sheets to light gauge steel purlins, offering a length that suits a wide variety of standard sheet thicknesses and profiles. No pre-drilling is required, keeping installation straightforward and efficient. The hex head with integral washer spreads the clamping load across the sheet surface, reducing the risk of pull-through and improving the weathertight seal. A coarse thread provides reliable grip in light section steel, whilst zinc plating gives the screw good corrosion resistance for use in external roofing applications. Supplied in a pack of 500.