Timber Tek Screws are high-performance, self-drilling fasteners designed for fast, strong, and reliable fixing into timber. The Type 17 cutting point eliminates the need for pre-drilling in most timbers while reducing splitting. A coarse thread ensures excellent holding power, while the knurled shank reduces driving torque and prevents timber jacking for a tight, professional finish. The hex washer head provides high clamping force under installation torque and are compatible with bonded washers for roofing and sealing applications.