Lag Screws: What Are They and How to Use Them

In virtually any industry, fasteners are important part types for securing items and systems in place. As such, common fasteners like screws and nuts are available in many different designs for different implementations. Also known as lag bolts, lag screws are a type of fastener that can be used for various applications. Despite being one of the older and more widely used types of fastener available on the market today, many people are not familiar with the functions and benefits of such components. As such, this blog will provide an overview of lag screws and how they are used.

With many fastener types available for procurement, lag screws have the impressive reputation of being one of the toughest fasteners in many industries. Therefore, lag screws are frequently used in applications where they secure items that are subjected to large forces, for example: pieces of lumber. In fact, for many such applications, lag screws like the Nitronic 60 hex lag bolt are the only option for fastening materials that handle large forces. Due to the heavy loads lag screws typically handle, they are usually very large in size to be able to withstand greater forces. Bigger than other fasteners, a lag screw will be around an inch long and a quarter of an inch thick.

The lag bolt gets its name from the part of its shaft that has no threading. This area before the head of the screw, known as the lag portion, varies in thickness and gives the screw its unique properties. The unthreaded area serves the function of creating massive compressive forces so that the materials will be held tightly together and the configuration will be able to withstand greater forces without falling apart. To successfully reap the benefits of lag screws, one must first understand how they are used.

The first step to using a lag screw is to ensure that the materials you are working are aligned properly. This prevents future complications of needing to remove and reassemble any parts. In many cases, a wise option is to use a clamp to further ensure your parts remain in place. Next, you must drill a pilot hole into your material(s) with a diameter that is slightly smaller than that of your screw. It is also important to ensure this hole spans the complete distance of the materials you will be joining before inserting the screw. Standard protocol calls for the lubrication of screw and bolt materials prior to use.

Once you have found the best available lag screw(s) for your operations, begin the procurement process with Unlimited NSN. Owned and operated by ASAP Semiconductor, we are a leading online distributor of high-caliber parts from trusted manufacturers around the globe. For any lag screws or other top-quality fasteners you require, allow us to provide any item you need with rapid lead times and competitive pricing. To get started, simply submit a Request for Quote (RFQ) form as found on our websites with details like your desired quantities, target prices, and shipping deadlines. Through our Instant Quote service, a member of our dedicated team of professionals will contact you with a custom quote for your comparisons within 15 minutes or less. For further inquiries, contact us at any time via phone or email; we are available around-the-clock, 24/7x365. With access to an unparalleled inventory of new, used, obsolete, and hard-to-find parts, make us your trusted procurement partner today to find out why loyal customers rely on us time and time again.


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