The Hillman Group 3 8 In X External Hex Head Lag Screws Pack

lag screws are used to fasten wood to wood and metal to wood attach objects to wood and affix items to concrete and masonry when combined with lag expansion shields they are heavy duty wood screws that are available in larger sizes both in terms of diameter and length and usually have a hex head to facilitate higher installation torque using a wrench while lateral strength is lower than a comparable bolt and nut lag screws are useful when access to one side of the joint is limited the appearance of a nut is undesirable or through bolt length is excessive