A multipurpose screw, fine thread, for smooth driving and greater holding power in wood and 20 to 25-gauge metal studs. Standard bugle head, No. 2 Phillips recess, phosphate finished screw. Can also be used for drywall, hardware, plywood, and softwood. For interior use. This screw is constructed of hardened steel which is the result of carbon steel being put through heat treatment, quenching, and further reheating making it extremely durable. Hardened Steel is more resistant to wear, corrosion, and abrasion.