Simpson Strong-Tie S09400WP1 Deck-Drive™ DWP WOOD SS Screw — #9 x 4 in. T-20, Trim Head, Type 305 (1 lb.)

The Deck-Drive DWP Wood SS screw is a powerful fastening solution for deck, dock and general exterior applications where extra corrosion protection is needed. With its specially designed sharp-point and unique box-threads, the DWP is ideally suited for the majority of wood used in today’s deck boards. DWP screws are also offered in a variety of sizes to fasten fascia and trim.