Fastenmaster 3 in. GuardDog® Exterior Wood Screw, 350-Pack superior performance for all your exterior wood fastening needs. These 3-inch screws feature the innovative TORX® ttap® Drive System, ensuring a secure stick-fit and wobble- installation every time. Designed for versatility, they are for use in pressure-treated decking, railings, stair stringers, deck frame blocking, dimensional headers, pergolas, and more. Fully tested and for use with pressure-treated lumber, cedar, redwood, and chemically treated wood, these screws provide reliable strength and durability. The screws also include nibs under the head for a clean, finished appearance, and their UV-resistant coating helps prevent fading and chalking. Installation is easy thanks to aggressive threads for strong holding power and a sharp, type 17 point that speeds up the process. A standard T25 TORX® driver bit can be used if needed. For results, install two fasteners per deck-to-joist connection and predrill when fastening near board ends or when working with hardwoods. Model Number: FMGD003-350