Knife thread countersunk decking screw designed for professionals and deck builders seeking a faster stainless steel decking solution. The square‑knife thread reduces drive‑in torque by at least 20% compared to standard deck screws, saving time on every install. Manufactured from high‑quality 304 stainless steel, featuring a No. 2 square drive, ribbed countersunk head, square‑knife threads, and an engineered Type 17 tip, this screw delivers premium performance with rapid installation. Available in 50mm and 65mm lengths to suit varying deck board thicknesses. Features Square‑knife thread reduces torque and speeds up installation by 20%+ Ribbed countersunk head for a clean, flush finish Supplied with driver bit 304 stainless steel for strong external durability No. 2 square drive for stable installs Packed in a convenient plastic tub Applications Fixing deck boards to hardwood or softwood joists Projects requiring rapid install times Suitable for internal or external decking Downloads Decking Brochure