AB-04Fit the right fixing for your wall typeTimber stud, fixing into the centre of the stud: drill a 3mm pilot hole and drive a wood screw straight in. Metal stud: never use a wood screw or plastic plug — they strip straight through 0.5mm steel — use a self-drilling metal-stud fixing or hollow toggle rated for the weight. Plasterboard between studs, timber or metal frame: use a plasterboard toggle or hollow-wall anchor sized for the board's weight, not a plain wall plug. Dot-and-dab plasterboard over masonry: use a fixing long enough (typically 60-75mm) to pass through the board and dab layer and grip the brick or block behind, drilling in stages so you feel when you hit the masonry. Solid brick or block with no plasterboard: drill a 6mm hole to 40mm depth, fit a red plastic wall plug, and drive a 40mm screw. Lath and plaster: avoid the laths themselves, as screws just crack old plaster — find the timber joist or stud behind (usually at 400-450mm centres) and fix into that, or use a long fine-thread screw with a lath-rated hollow anchor if no joist is available.