GuardDog Exterior Screw, #9 x 3-1/2 in L, Torx TTap Drive, Flat Head, Available in a 1350 pk Box, Sold by the Pound

FastenMaster GuardDog is a versatile exterior wood screw used for a variety of applications including pressure treated decking, railings, stair stringers, deck frame blocking, dimensional headers, pergolas and more. TORX ttap Drive System delivers stick fit, wobble free installation. Fast Start, Clean Finish: Sharp Type 17 Point grips the wood for a fast start, while cutting nibs under the head deliver a clean finished look. Guaranteed Corrosion Resistance: Fully tested, fully guaranteed in pressure treated lumber, cedar, redwood, and chemically treated lumber for the life of the project.

• Torx TTap Drive
• Guaranteed corrosion resistance
• Color matched to blend in with pressure treated decking
• Sharp threads quickly penetrate lumber
• Approved in pressure treated decking