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Carriage Bolts

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Though they are made for wood, they are usually made from various types of steel, which aids in strength and durability. Read More…

Carriage Bolts Carriage bolts are a type of threaded fastener that is specifically designed to be used with wood, though custom versions can be made to work with metal. Also called coach bolts or plow bolts, carriage bolts are quite common and can be found at most hardware stores in a number of lengths, diameters and thread pitches.
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Leading Manufacturers

Hackensack, NJ  |  800-272-3673

Our company has a reputation for superior products, customer service, and dependability. All our fastener products are built to last, and we know that our customers appreciate our dedication to using the best materials and manufacturing techniques. If you would like to learn more about us, contact us by phone or email, or stop by our website today!

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Ford Fasteners, Inc. $$$

Jefferson, OH  |  888-536-3674

Our company has manufacturing experiences dating back to 1970 and over the years we have grown into an international supplier of bolts.

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Ken Forging $$$

Winston-Salem, NC  |  800-642-0921

From our inventory of over 130,000 different fasteners, we know precisely which ones are right for your application. We test them for material composition and measurement accuracy. With our Vendor Management Inventory service (VMI) our Service Technicians monitor your needs and keep you fully supplied at all times. Our ISO 9001 and AS9120B certifications helps us maintain system standards that ensure the fasteners we supply are the highest quality parts available.

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Southern Fasteners & Supply, Inc. $$$

Hampstead, MD  |  410-239-7766

With over 100 years of employee experience in fasteners, we have placed all of our emphasis on maintaining reliability for service, quality, and value (at competitive prices, of course). We maintain an immense inventory of over 195 million fasteners in stock. And if you can't find what you need in our stock, we can manufacture it to your particular specifications and requirements, in any finish or material necessary. Call or email us today!

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World Fasteners, Inc. $$$

Brooklyn, NY  |  800-456-2658

Founded in 1979, Tanner Bolt & Nut is intent on supplying our customers with the best product, combined with quality service and competitive pricing. We promise that we will try to ensure that our customers have a satisfying and productive experience every time they call our sales office or visit one of our websites.

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Tanner Bolt & Nut Corp. $$$

Houston, TX  |  281-447-0081

At Eastwood Manufacturing, we have the experience to fill your fastener requirements. We manufacture not only standard parts, but unusual sizes and nonstandard configurations. Providing eye bolts, anchor bolts, hex bolts, sockets, screws, nuts, studs and more, Eastwood responds quickly and positively to all of your fastener needs. For high standards of accuracy and quality, call Eastwood today!

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Eastwood Manufacturing $$$
placeholder image Ford Fasteners, Inc. Ken Forging Southern Fasteners & Supply, Inc. World Fasteners, Inc. Tanner Bolt & Nut Corp. Eastwood Manufacturing

A carriage bolt consists of a large round, domed head with an externally threaded bolt projecting from it. The head usually does not have slots for a screwdriver or other driving force, and is typically at least twice the diameter of the bolt shaft. Beneath the head is a square fitting that grips the wood as the bolt is placed and fastened. This fitting keeps the bolt from twisting or turning, and generally helps it maintain a snug fit.

Stainless Long Shank Eyebolt Stainless Long Shank Eyebolt - Ken Forging

This is the basic carriage bolt design, but there is some variation. For example, one variation replaces the square fitting with ribbing that holds the bolt in place, for use with other metal components. Carriage bolts vary in length and diameter according to their intended uses, regardless of the type of materials that are being fastened by the bolts.

Carriage bolts are often used in building and home improvement projects. They frequently secure pieces of timber together during the construction of outdoor decks, homes and pilings. They are also commonly used in machinery assembly, patio and ready-to-assemble furniture, chain link fences and even automobiles. Because the square fitting prevents the bolt from turning, carriage bolts are also a good choice for situations where the bolt head is not easily accessible.

When selecting carriage bolts for an application, it is important to choose ones that are the right width and length. Consider that a bolt that is too narrow may lead to the fastener failing under strain, causing breakage, while a bolt that is too large may cause stress to the surrounding wood or metal, causing cracks. It is also important to consider length, as the carriage bolt must be long enough to go through the material it is fastening, but not so long that the protruding end becomes a nuisance.

Carriage Bolt Informational Video