General description Designed as an alternative to traditional coach screws, TIMCO Wafer Head Exterior Green Timber Screws are ideal for timber-to-timber applications. These screws feature a wafer head for improved clamping and a low-profile finish, making them suitable for various outdoor projects such as decking, stairs, fencing, roofing, and landscaping. Technical specifications Gauge: 8.0 mm (widest part of thread) Length: 225 mm (from underneath head) Head: 21 mm diameter flanged wafer head with T40 torx drive Plating: Organic green Corrosion resistance: 1,000 hours minimum salt spray resistance Thread: 50-degree deep single thread for secure fixing with high pull-out resistance Point: 25-degree sharp point for easier penetration into all wood types Usage These screws are particularly effective for screwing warped timbers together or fixing timber sleepers. The washer head provides extra pull-down power compared to standard hexagon head screws, enhancing their performance in