High performance all-purpose self-countersinking screw for fast accurate driving into softwood, chipboard and most hardwood. Features 2 patented slots to prevent splitting close to the edge, and ribs & tucks to enable flush fitting without surface damage. The waxed thread and zinc and yellow passivated coating provide up to 20x more rust resistance than standard BZP screws. Designed with a 20-degree needle point that is sharp enough to penetrate almost all timbers without the need for a pilot hole. The wide, deep thread is designed to reduce driving resistance by up to 40%, requiring less torque for faster completion. Ribs and tucks ensure a flush fitting without surface damage. Reinforced collar prevents snapping and provides depth. Sharp, wide, and deep thread reduces driving resistance, requiring less torque. 20-degree needle point penetrates wood easily without a pilot hole. Two patented slots prevent splitting when screwing close to the edge. Zinc and yellow passivated coating offers up to 20x more rust resistance than standard BZP screws.