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.

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 $$$

Niles, IL  |  847-647-9555

Aetna Screw Products is one of the largest stocking distributors of bolts, spherical rod ends, ball joints, HVAC control dampers, and custom linkage assemblies. We have experience serving industries such as material handling, irrigation, agriculture, construction, and more. Let Aetna be your single source for all your motion transfer application requirements.

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Aetna Screw Products Co. $$$

Lincolnshire, IL  |  800-323-7367

Since 1968, we have offered the finest fasteners. At XL Screw Corporation we feature over 9,000 items, with 600 new items added in 2009. “Quality First” is the standard by which we live. We offer metric fasteners, plastic fasteners, stainless steel fasteners and screws. We offer customers a reputation built upon quality & services, competitive pricing, proven managed inventory programs and more.

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XL Screw Corporation $$$

Wallington, NJ  |  973-472-2300

Since 1986, Aerospace Manufacturing has been a leading hot heading specialist and licensed manufacturer of aircraft fasteners such as industrial bolts, titanium bolts, studs and fasteners. QSLM approved for NSN 5306 bolt manufacturing. We are ISO certified, and our customers are aerospace industry world leaders. Contact us today for more information about who we are and what we do.

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Aerospace Manufacturing Corporation $$$

Goodyear, AZ  |  623-925-5998

At Parker Fasteners we take great pride in our work, and we make it our goal to exceed your expectations. We want to be your partner, providing quality parts and solutions cost effectively and all from American sources. We even cold head challenging materials, so we can solve your toughest fastening problems. For all your socket drive fastening needs be sure to give us a call or check out our website to see how we can make a difference in your production!

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Parker Fasteners $$$
placeholder image Ford Fasteners, Inc. Ken Forging Aetna Screw Products Co. XL Screw Corporation Aerospace Manufacturing Corporation Parker Fasteners

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