Manufactured to SAE J78-1979 & independently tested to IFI specification ASTM C1002-89.
No 2 Drill Point
Surface hardened up to 650 HV to prevent torque shearing under load & a core hardness of up to 400 HV for improved ductility.
Made from C10-18 Steel.
Cosmetically plated in zinc.
All Drywall fastenings should be driven straight and the heads should be set slightly below the plane of the surface. Once inserted the screw should be sealed and taped to avoid any contact with wet plaster or plaster board lime.