Simpson Strong-Tie T07162WP1 #7 x 1-5/8" 316SS DWP Trim Head Screw T-15 1lb Deck-Drive DWP Wood SS screws are a powerful fastening solution for deck,dock and general exterior applications, providing extra corrosion protection. Features Trim head; also available in flat-head version Unique "box" thread design with raised-ridge technology greatly reduces driving torque, which allows you to drive more screws on a single battery charge Specially designed sharp point penetrates hard wood products with ease 6-lobe drive helps prevent driver-bit cam-out, resulting in easier driving and longer bit life T15 6-lobe bit included USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.