Product Description   Steel zinc screw with a hex head and gimlet point. Use for wood with non-corrosive environments. Thanks for shopping Hipp Hardware Plus's Online Store for all your DIY and Home Improvement needs 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.