High performance all purpose self countersinking screw for fast accurate driving into softwood, chipboard and most hardwood. Features two patented slots to prevent splitting close to edges. Ribs and tucks under the head ensure flush fitting without surface damage. The waxed thread and zinc yellow passivated finish provide enhanced rust resistance, up to 20 times more than standard BZP screws. Its 20 degree needle point is sharp, allowing penetration into most timbers without a pilot hole. The wide, deep thread design reduces driving resistance by up to 40 percent, requiring less torque for faster completion. Reinforced collar prevents snapping, providing depth. An excellent choice for reliable and efficient woodworking tasks.