The Hillman Group 832042 5/16 x 3-1/2-Inch Stainless Steel Hex Lag Screw， 25-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>The length of a lag screw is measured from the dunderhead 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>Stainless Steel</li></ul></div><img src="http://ecx.images-amazon.com/images/I/4110EK-Qf1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/417mbK2uZOL.jpg" noproxy>