March 2, 2024

Lag Screws For Wood

Lag screws are some of the toughest fasteners available, typically used in applications where a heavy load is bearing on the screw. Often referred to as lag bolts, they differ from wood screws and sheet metal screws in that they require a pre-drilled hole for the head prior to installation. This step is necessary due to their large diameter. Without a pilot hole, the screw head can easily split the wooden stud.

While some might think that using such a massive screw to mount their flat screen TV is overkill, lag screws are the ideal fasteners for certain projects in your home. From fixing decks to repairing fences, they’re perfect for a wide range of applications and can handle significant stress.

Unlike wood or sheet metal screws that have multiple head types, lag screws only come with hex heads. Since they’re designed to hold up under high torque, hex heads allow them to be driven into place with a ratchet or socket wrench.

A hex head also makes them easier to remove, should the need arise. Lag screws are typically made from galvanized steel for long-lasting strength and durability. The galvanized coating protects the screws from moisture and other environmental factors that could cause corrosion.

To install a lag screw, first ensure that all materials are properly aligned. Once that’s done, clamp them together to keep them in place. Then, drill a hole using a bit that’s slightly smaller in diameter than the lag screw. This is important, as failing to do so can result in the screw snapping off in the middle of its length or causing the head to break off. lag screws for wood

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