Designed as an alternative to the traditional coach screw mainly used for timber to timber applications. Coated with a patented multi-layer corrosion resistant plating to withstand 1,000 hours salt spray test, this screw is ideal for external applications. Hex head countersunk with a fixed washer.Silver organic coating to withstand up to 1,000 hours of salt spray resistance.Helix shank for removing debris and to improve clamping.50° deep single thread to provide a secure fixing with high pull-out resistance.Single slash point to reduce torque and the risk of timber splitting at low edge distance.25° sharp point and single lead for a fast start and improved thread acceptance.