Share this page on

Lag Bolts Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial lag bolt manufacturers and suppliers. Access our comprehensive index to review and source lag bolt manufacturers with preview ads and detailed product descriptions. These lag bolt companies can design, engineer and manufacture lag bolts to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these lag bolt manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of lag bolt fasteners, lag bolt threads, large lag bolts.

Related Categories

Hercules Fasteners' staff has been supplying customers with the right bolt solutions since 1985 and takes pride in providing quality lag bolts at competitive pricing and with exceptional customer service and prompt, hassle-free delivery. Their ISO-certified distribution business is unparalleled in customer service and product quality, so be smart and choose Hercules.
Read Reviews
All of our lag bolts can be reinforced with superior materials to ensure their longevity. We can manufacture creative solutions for your unique applications. Our engineers are diligently constructing the most trusted bolts in the industry. We promise to accurately produce all of your solutions. Turn to us for unrivaled quality. If you have any questions then give one of our representatives a call!
Read Reviews
We never stop working for you at our company. Our numerous companies around the world have given us the reputation for long-lasting quality in all our products. No matter if you are a long-time customer or a first-time buyer, we work equally hard to keep you satisfied. Find out how we can help you today by contacting us by phone, email, or you can simply visiting our website for more info!
Read Reviews
Our expertise in making forged bolts means that we make the industry standard when it comes to lag bolts. We work to make specialized and unrivaled products across the board. Some of the various products we cover are lag bolts, anchor bolts, eyebolts, nut eyebolts, and many more. We work to benefit our clients and serve at your convenience. We also make forgings and fasteners. For more information on our lag bolts, call us today!
Read Reviews
We offer a huge variety of bolting inventory, from lag bolts, to stainless steel bolts, and many others! No matter what you need, we can get it for you. We will even work with you to create customized products that are just for you! Our promise to you is to offer you the highest quality and best value around. That is how we maintain our beneficial relationship with all our customers. Contact us today for more info!
Read Reviews
Our bolts are made exclusively for our customers. We manufacture our products from the highest quality materials and focus on making our products from stainless steel, copper, nickel, steel, iron, and a wide variety of other metals just for you. We can even create plastic fasteners for lighter-weight jobs. Find out how we can help you by visiting our website today!
Read Reviews
More Lag Bolts Companies More Lag Bolts Companies GO TO TOP
Industry Information

Lag Bolts

A lag bolt is a mechanical fastener with a threaded body that is driven through two adjacent surfaces for the purpose of adjoining them securely. Also known as a lag screw, this piece of hardware is most often used to link wooden elements with other wooden parts or concrete foundations. Lag bolts are generally large, heavy duty and often industrial bolts, though smaller variations are available for use in furniture and cabinetry industries.

Popular in construction, masonry, locomotive, mining and civil engineering industries lag bolts are used as fasteners at integral joints of such structures as bridges, railway trestles, decking and even barn construction. Wooden components such as posts and beams are commonly connected with these devices as they offer an extremely secure connection without causing significant damage to the woodwork. To ensure a continually high degree of clamping force when tightened, lag bolts are made of strong materials that are not likely to stretch, expand or crack over time. The specific material depends on the intended use and environmental pressures to be inflicted upon the bolt. Zinc-plated steel and hot dipped galvanized steel are popular choices as they are low cost and still offer some resistance to rust. Stainless steel and silicone bronze, however, offer heightened protection against the elements as they are highly resistant to corrosion from moisture and chemicals that may be present in some industrial settings. 

The manufacturing process used to create lag bolts is similar to that of other bolt types. A steel or bronze wire rod is first heated consistently for an extended period of time and all rust particles are removed. If needed, the metal is coated for added protection. Cold forging is then used to shape the rod at room temperature and the rod is forced through dyes at a high pressure to be shaped into long perfectly round rods. Once cut down to the desired length, a second dye shapes the head of the lag bolt which may be either square or hexagonal. Cold forging using high pressure rollers is then used to press in the thread pattern. The finished course-pitched lag bolt is then ready for use in a variety of applications. A pilot hole is made in the first piece of wood or other material and the bolt is inserted. A wrench, spanner or pliers are then used to drive the screw into the second bit of material. The threading bites into the wood to hold the two components together. During installation, caution must be used so as not to damage the head of the screw. The head provides compression while preventing the bolt from being driven completely through both materials. In some instances a washer is also used to protect softer lumbar, ensuring that the head will not sink into the wood. It is important to consider the materials to be fastened as well as the strength and corrosion resistance required of the bolt materials. Other considerations include the bolt length and diameter.



Lag Bolts
Lag Bolts - Ford Fasteners, Inc.
GO TO TOP