Lag Bolts, also known as lag screws, are large wood screws with hex heads and are used to fasten lumber and other heavy materials in construction. They have a wide range of applications and are one of the toughest types of fasteners, with their coarse threads creating a strong grip on the material and the head pulling it tightly together.
In fact, a hex head has as much or more holding power than a plain nail in a wood stud. However, they can be difficult to install and can split wood if not installed properly. To prevent this from happening, it is important to use a drill bit that is slightly smaller than the screw hex size, and to drill a hole through the materials you are fastening that’s at least as long as the hex of the bolt.
Lag bolts are made of a variety of materials to suit the myriad applications that they’re used for. The most common styles are zinc-plated, Stainless Steel 18-8, silicon bronze, and hot-dipped galvanized. Each type of lag bolt offers its own unique properties and benefits.
For example, zinc-plated lag bolts have a moderate level of protection against rust and are good for indoor or mild exterior use. Stainless Steel 18-8 is perfect for harsh outdoor and marine conditions due to its high corrosion resistance. And silicon bronze lag bolts are typically used in wood boat building since they’re resistant to abrasion and corrosion. Lag Bolts