These construction lag screws are heat treated and hardened. They are stronger and more durable than ordinary lag screws. They have deep cutting threads for quick, easy driving and a sharp notched point for exact, quick starting with less "walking". a built-on round Washer head with smooth edges gives a professional finish. 1200 hour corrosion resistance in both ACQ and salt spray conditions. Deep, wide and sharp threads provide maximum holding power; they cut cleanly and easily. | Big Timber Construction Lag Screws | Size 14 x 1-1/2"