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.
- Hex head is easily driven with simple wrenches and requires minimal clearance above the fastener
- Common applications include retaining walls, deck frames, and outdoor play equipment
- Stainless-steel material
- Use in pre-drilled hole