Allgrip 4 Self Tapping (Box Of 200) No.12 x 3in, Pan Pozi, supplied in a pack of 200.
Self tapping screws cut their own thread in pre-drilled sheet metal, plastic and thin section steel. Used for fixing panels, brackets, trims and enclosures.
Drill a pilot hole to the recommended size for the gauge and drive with a Pozi or slotted screwdriver.