Grip-Rite DeckForce Exterior Wood Screws are expertly designed for decking and fencing projects, ensuring durability with our advanced PrimeGuard Nano weather-resistant coating. This innovative treatment offers exceptional rust and corrosion resistance, surpassing ASTM B-117 standards with a minimum of 1,000 hours of salt spray resistance. Each screw features a T-25 star drive for a secure tool-to-fastener connection and incorporates dual-action auger threads with a T 17 AutoPilot point for fast and efficient installation. The diamond file shank is engineered to resist backing out, while the Wedge Lock Head provides a firm connection. Additionally, nibs under the drive head allow for effortless countersinking, achieving a smooth, flush finish.