Understanding the Difference Between Lag Bolts and Lag Screws

Posted on May 8, 2024 Maria Wilson Industrial Products

When operating within the realm of construction and woodworking, understanding the nuances of various fasteners is of the utmost importance. Among the fasteners utilized in these environments, lag bolts and lag screws stand out for the purpose of securing heavy materials or providing structural support. However, there seems to be a persistent confusion regarding the distinction between these two terms, and despite common belief, lag bolts and lag screws are one and the same. In this blog, we will discuss these versatile fasteners in more detail so that you can understand their general use.

In their most basic form, lag bolts or screws are heavy-duty fasteners primarily designed for applications requiring significant load-bearing capabilities. Their construction typically involves a thick, coarse thread that runs along a portion of the shaft, which distinguishes them from standard screws and allows for a very strong grip when driven into wood or other materials. These fasteners also feature hexagonal heads that are devoid of slots on the top surface, which allow for traditional screwing methods to be carried out.

As far as installation goes, lag bolts/screws require a pre-drilled pilot hole to accommodate their larger size and coarse threads. This step is essential for preventing splitting in wood and ensuring proper alignment during insertion. Additionally, due to the shape of their heads, securing lag bolts also necessitates the use of a torque wrench or impact wrench to uphold a reliable and snug fit into the material.

In terms of material and finish, lag bolts/screws are available in various options to suit different environmental conditions and aesthetic preferences, with common materials including steel, stainless steel, and brass. Additionally, finishes like zinc plating or galvanization provide further protection against rust and weathering, extending the lifespan of the fasteners in outdoor applications.

With little to no difference existing, one might wonder why two different terms exist for the same item. The confusion actually arises from regional preferences and industry jargon rather than any inherent difference in the component itself. This linguistic variance can lead to misconceptions about their nature, but in practice, both terms denote identical components. Understanding that lag bolts and lag screws are synonymous prevents confusion during communication, particularly in professional settings where precision is crucial. Whether you are discussing construction plans with colleagues or seeking advice at a hardware store, using the correct terminology ensures clarity and avoids misunderstandings.

ASAP Commercial Hardware is an optimal purchasing platform for lag screws or bolts, as well as over 2 billion other components that suit a wide range of operational needs. We invite you to explore our website at your leisure through our curated catalogs, or you can narrow down particular parts using our search engine and filters. However you come across items of interest, you can easily request quotes for your comparisons through our online RFQ service and forms, our representatives working around the clock to curate ideal procurement options in response. While other channels may ask you to compromise between timely delivery, pricing, and quality, we strike an optimal balance so you can meet your requirements with ease. With this in mind, see why so many customers rely on our parts and services when you kick off the procurement process with us.

Semiconductor’s Certifications and Memberships

Thank You for Visiting.

We hope that you will visit us again the next time you need hardware and fasteners parts and make us your strategic purchasing partner.

Request for Quote

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.

bottom to top