Product details:

Hillman 230089 Hex Lag Screws, 3/8 X 3-Inch, Zinc, 50-PackHex 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.- The length of a lag screw is measured from the under head bearing surface to the tip of the screw- Hex head is easily driven with simple wrenches and requires minimal clearance above the fastener- Zinc Plated