General description TIMco In-Dex Timber screws are specifically designed for various applications including decking, stairs, fencing, roofing, and landscaping. These screws feature a unique design that enhances their performance and durability, making them an ideal choice for timber-to-timber connections. Technical specifications Gauge: 6.7mm (widest part of thread) Length: 150mm (from underneath head) Head diameter: 16mm (flanged wafer head) Head type: T30 torx recess Plating: Organic green, corrosion-resistant Salt spray resistance: Up to 1,000 hours (minimum) Thread: 50-degree deep single thread Point: 25-degree sharp point Usage Ideal for screwing warped timbers together Effective for fixing timber sleepers Designed for easy penetration into all wood types Other information Features a washer head for extra pull-down power compared to standard hexagon head screws Includes a helix to remove debris and increase insertion speed