Spax #9 x 3-1/4 In. Flat Head Exterior Multi-Material Construction Screw (1 Lb. Box)

Flat head multi-material construction screws with T-Star Plus drive and HCR-X exterior coating are the versatile fastening solution for a wide range of applications in multiple materials including wood, drywall, masonry, sheet metal, and plastic. Heat treated to a Grade 5 durability and patented thread serrations that reduce driving torque to prolong power tool battery life. Patented 4Cut Point prevents splitting and requires no pre-drilling in wood. Spax HCR-X Coating offers superior X-terior corrosion resistance when installed in treated lumber and is tested in coastal construction environments.