Drywall screws are designed to fix plasterboard to timber or thin metal in partition walls. To meet the demands of the USA market they have a Phillips cross recess drive. Drywall screws have bugle heads ensure a flush countersunk into the board without paper tearing. Fine threads assist fixing to metal stud and coarse threads for fixing to timber. The very sharp point is designed to pierce 1mm metal and ensures immediate and wobble free penetration of the board. Self-drilling fine thread drywall screws have a drill tip to penetrate heavier gauge metals.