A box of 100 high-performance 6.0 x 120mm woodscrews is a heavy-duty structural timber fastener designed for deep, load-bearing wood-to-wood fixings. Featuring a double-countersunk head with self-sinking reaming ribs, a sharp split-resistant slash point, and deep coarse threading, it drives smoothly into dense softwoods without requiring pre-drilling. The heavy-duty 6.0mm shank gauge and extended 120mm length deliver exceptional shear strength, bending resistance, and clamping force—making it ideal for structural timber framing, securing heavy posts, roof construction, joist connections, and landscaping timber assemblies.