Coarse Thread Drywall Screws Used to secure plasterboard to timber stud work. These screws are designed for use in clean, dry & low humidity environments and meet CE Standard WebBS EN 14566:2008. The screws feature a bugle head type and require a PH2 driver bit. They are made from Carbon Steel with a Black Phosphate finish and a 25° sharp point. The pack includes one PH2 S2 Bit. These screws are suitable for Softwood and Drywall substrates. Each screw measures 3.5 x 25mm, with a thread diameter of 3.5mm and a thread length of 20mm. The pack dimensions are 135 x 90 x 90 mm and it weighs 1.350 kg.