Fastenmaster 2-1/2 in. GuardDog® Exterior Wood Screw, 350-Pack features a TORX® ttap® Drive System that ensures stick-fit and wobble- installations. These versatile exterior wood screws are i for a wide range of applications including pressure-treated decking, railings, stair stringers, deck frame blocking, dimensional headers, pergolas, and more. Fully tested and for use in pressure-treated lumber, cedar, redwood, and chemically treated lumber, these screws provide reliable performance. Designed for a clean, finished look, they include nibs under the head and a UV-resistant coating that resists fading and chalking. GuardDog® screws are easy to install with aggressive threads for strong holding power and a sharp type 17 point that speeds up installation. A standard T25 TORX® driver bit can also be used if needed. For results, install two fasteners per deck-to-joist connection and predrill only when fastening within 1-1/2” of the end of a board or when working with hardwoods. Model Number: FMGD212-350