1. Product Name & Structural Features Official Name: Wood Building Screw, Countersunk Head, Torx Drive with 6 Nibs & Type 17 Cutting Point Countersunk head with 6 nibs under the head for easy sinking into timber. Torx drive for stable torque transmission. Type 17 cutting point helps cut wood fibers and prevents splitting. Special twisted shank reduces driving resistance during installation. 2. Material & Surface Treatment Main material: Carbon steel, electro-galvanized (clear zinc / yellow zinc plated) to provide corrosion protection. 3. Key Advantages & Application Scenarios High holding power and good installation performance. Widely used for timber frame, decking, pallet and other wood construction fixing.