Fastenmaster 1-5/8 in. GuardDog® Exterior Wood Deck Screw, 350-Pack superior performance for your outdoor wood projects. These screws feature the TORX® ttap® Drive System, ensuring a secure, wobble- installation with stick-fit. Designed for versatility, they are for use in pressure-treated decking, railings, stair stringers, deck frame blocking, dimensional headers, pergolas, and more. Tested and for use in pressure-treated lumber, cedar, redwood, and chemically treated wood, these fasteners provide lasting durability. The screws include nibs under the head for a clean, finished look, and their UV-resistant coating prevents fading and chalking. Installation is quick and easy thanks to aggressive threads for strong holding power and a sharp, type 17 point. For results, install two fasteners per deck-to-joist connection and predrill only when fastening near board ends or in hardwoods. Model Number: FMGD158-350