Phillips bugle head, fine thread, phosphate coated drywall screw. Type ‘S’ point for fastening gypsum to light gauge steel. Application: Attaches gypsum board to light gauge steel. Installation: A standard screw gun with torque limiting nose piece set at a maximum of 3000 RPM drive speed recommended. Use a #2 reduced Phillips drive bit. The fastener is completely installed when the fastener head is seated flush with the work surface. Do not over torque as it can cause the head to snap or damage to the work surface. Specifications: • Meets ASTM1 A 510 for carbon steel manufacturing • Meets ASTM C 1002 for attaching gypsum board to steel studs