Lag bolts feature a hex head, larger size, sharp cutting threads, and unthreaded section in the shank adjacent to the head. The size of the head varies with the size of its body. Its hex head is also designed to be driven by a hex driver tool. While its sharp thread cuts easily with the material of application. Typically, lag bolts are used to put pieces of lumber and other heavy carpentry projects.

Lag bolts can be manufactured in different variations. There are multiple sources of components from around the world that offers a diversity of specifications in lag bolts. To suit the demands and requirements in fastening, lag bolts manufacturers and suppliers innovate them accordingly for their effectiveness in assembly.

There are different types of materials used in manufacturing lag bolts as well as several options for plating or coating the fastener.

Lag Bolts and Lag Screws

Lag screws and Lag bolts are two names interchangeably used yet are the same fastener. Lag bolts are the most common term known for the component since the screw appears with a machine thread and a larger size. They are mostly used in applications of wood-to-wood and wood-to-metal and sometimes in concrete. They function in heavy-duty workpieces like connecting hardwood or lumber to other materials. 

Stainless Steel Lag Bolts

Stainless steel is the most prevalent material used in making lag screws. This material offers high corrosion resistance and strength. The common grade for stainless steel lag screws is 304 stainless steel and 18-8 stainless steel.

Hot Galvanized Lag Bolts

The HDG process creates an alloy coating to lag screws. Its purpose is to make steel fasteners highly resistant to corrosion making no room for damage and sustaining a harsh environment of applications.

Zinc Plated Steel Lag Screws

Zinc plating on lag bolts makes a hardened fastener. These screws are less likely resistant to corrosion compared to hot dip galvanized lag bolts but they are ideal for exterior use. 

Silicon Bronze Hex Lag Screws

Silicon bronze lag bolts are typically in the selection of hex lag screws. This screw has coarse threads larger than sheet metal screw thread. Silicon bronze hex lag screws are also resistant to corrosion.

If you are looking for specific finishing, coating, and material for lag bolts/lag screws, プリンスファスナー can provide OEM and custom manufacturing for different requirements.