Drywall screws are used for fixing plasterboard to battens, rafters or light steel frames. Screwing is the preferred method of securing board materials and dramatically reduces the possibility of the skim coat blowing as with conventional nails. The bugle shaped head ensures that they recess well into the board. Each screw is hardened, twin threaded, rustproof and has a black phosphate finish. Supplied in 1,000 in collated strips.