The Hillman Group 230063 Hex Lag Screw， 5/16-Inch X 4-Inch， Zinc， 50-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>The length of a lag screw is measured from the under head bearing surface to the tip of the screw</li><li>Hex head is easily driven with simple wrenches and requires minimal clearance above the fastener</li><li>Zinc Plated</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31DKyWmL0oL.jpg' noproxy></br>