The TIMCO Timber Screws Hex Flange Head Exterior Green are designed as an alternative to traditional coach screws for timber to timber applications. These screws feature a hex head countersunk with fixed washer and are coated with a patented multi-layer corrosion resistant plating that withstands 1,000 hours salt spray test, making them ideal for external applications. The helix shank removes debris and improves clamping, while the 50° deep single thread provides secure fixing with high pull-out resistance. The single slash point reduces torque and minimizes timber splitting risk at low edge distances.