Our 25mm self-drilling jack-point screws let you quickly and securely fix plasterboard linings to higher gauge metal frameworks. Plasterboard linings must be fixed securely to achieve the best fire and acoustic performance. 25mm British Gypsum Jack-Point Screws have self-drilling points so you can fix to higher gauge metal frames. Use these corrosion resistant screws to fix single layer 12.5mm and 15mm plasterboard.