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 patented multi-layer corrosion resistant plating that withstands 1,000 hours salt spray testing, making them ideal for external applications. Key features include a hex head countersunk with fixed washer, helix shank for debris removal and improved clamping, 50° deep single thread for secure fixing with high pull-out resistance, and a single slash point to reduce torque and timber splitting risk. The patented lubrication enhances insertion time and provides greater corrosion resistance.