Allgrip 1/2 Self Tapping Poz No.12 x 1in, Pan, supplied in a pack of 250.
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.