Drywall screw, C1022, bugle head, PHILLIPS, heat treatment(hardend) grey/black phosphate, bulk packing/small box packing.

We are a manufacturer which specialize in production of various kinds of fasteners(such as chipboard screw, drywall screw, self-drilling screw, roofing screw, self-tapping screw, wood screw, concrete screw, window frame screw etc. ).