The Hillman Group 812039 Hot Dipped Galavanized Hex Lag Screw, 5/16 X Product Description Hot galvanized, Hex head. Gimlet point. Suitable for use in treated lumber. From the Manufacturer Hex Lag Screws are used for directly fastening into wood surfaces. They are used with a lag shield, and lag screws can be used in masonry applications. The hex head is six-sided and ideal for easy driving and quick installation. The threads on lag screws are designed to embed into the wood, rather than relying on a nut to secure the connection. Features Hot Galvanized, Hex Head Hex Head Is Easily Driven With Simple Wrenches And Requires Minimal Clearance Above The Fastener Hot Dipped Galvanized From The Brand: The Hillman Group 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.