Carriage Bolts
    • The square neck of these carriage screws prevent the bolt from turning once fastened, offering a stable way to fasten metal-to-wood and wood-to-wood.
    • Ideal for professional or DIY fastening projects and provides some resistance to corrosion in interior or exterior environments.
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    • The square neck of these carriage screws prevent the bolt from turning once fastened, offering a stable way to fasten metal-to-wood and wood-to-wood.
    • Ideal for professional or DIY fastening projects where corrosion resistance is necessary, like exterior environments.
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    • The square neck of these carriage screws prevent the bolt from turning once fastened, offering a stable way to fasten metal-to-wood and wood-to-wood.
    • Ideal for professional or DIY fastening projects where maximum corrosion resistance is necessary, like exterior or marine environments.
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    • For Use With A307 & Grade 55 Threaded Rod
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    • For Use With A307 & Grade 55 Threaded Rod
    • Grade 2 and A563 Grade A Heavy Hex Nuts
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    • Corrosion Resistant For Outdoor Use
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    • Excellent Corrosion Resistance For Harsh Environments
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Collection:Carriage Bolts

Purchase Carriage Bolts from Fasteners Plus

Explore our extensive selection of high-quality carriage bolts at Fasteners Plus, your ultimate destination for all your fastening needs. Whether you're working on a DIY project, construction, or professional assembly, our collection features a range of sizes, materials, and finishes. From sturdy stainless steel to weather-resistant hot dip galvanized options, we provide carriage bolts designed for reliable performance in indoor and outdoor applications. Ideal for wood, metal, and other materials, our bolts ensure a secure fit and are perfect for a variety of applications, including decking, fencing, and machinery assembly. Shop now and find the perfect carriage bolt to complete your project with confidence.

Carriage Bolts FAQ

Each of these FAQ are pulled from our guide: What is a Carriage Bolt and Other FAQ - be sure to visit the article for more info about carriage bolts.

  • What Are Carriage Bolts Used For?

    Carriage bolts are versatile fasteners, most often used to fasten metal to metal or wood to metal. Their unique design ensures a robust connection in various applications, from construction projects to DIY home repairs.
  • Why Are They Called Carriage Bolts?

    Originating in the early 1800s, carriage bolts were initially designed for assembling carriages and their wheels, offering the needed durability and strength.
  • What are some other names for Carriage Bolts?

    Coach Bolts, Carriage Screws, Round Head Square Neck Bolts, Mushroom Head Square Neck Bolts, Dome Head Bolts, Cup Head Bolts, Plow Bolts.
  • When to Use Carriage Bolts

    Carriage bolts are best used when a smooth finish is required on the bolt head side, especially in wood construction, outdoor furniture, decking, and fencing. They are also used in metal structures where the smooth head prevents snagging and injury.
  • How do Carriage Bolts compare to other types of bolts?

    Carriage bolts have unique characteristics that distinguish them from other types of bolts, making them suitable for specific applications.
  • Understanding Carriage Bolt Sizes

    Carriage bolt sizes refer to the diameter, length, and thread pitch of the bolt. The size needed depends on the thickness of the materials being fastened and the strength requirements of the joint.
  • Carriage Bolt ‘Pitch’ or ‘Threads per Inch’

    The pitch or threads per inch (TPI) of a carriage bolt refers to the number of threads along a one-inch length of the bolt. This affects how the bolt engages with the nut and the material, impacting its suitability for different materials and strength requirements.
  • Materials Used to Make Carriage Bolts

    Carriage bolts are made from a variety of materials, including hot dip galvanized, 304 stainless steel, and 316 stainless steel. The choice of material depends on the required strength and the environmental conditions, such as exposure to corrosion.
  • Installation Guide for Carriage Bolts

    To install a carriage bolt, a hole is drilled through the materials to be fastened. The bolt is then inserted from the smooth head side, with a washer and nut on the other side. Tightening the nut pulls the square shank into the material, preventing the bolt from turning.
  • Removing Carriage Bolts

    To remove a carriage bolt, you typically loosen and remove the nut from the opposite side. If the bolt is stuck or the head is damaged, specialized tools like vise grips or a bolt extractor may be required.
  • Advantages of Carriage Bolts

    Carriage bolts offer a neat finish with their smooth, rounded heads, and the square shank under the head prevents the bolt from turning during tightening. They are easy to install and provide a measure of security due to their tamper-resistant head design.

Find Other Bolts at Fasteners Plus

You can find more than carriage bolts at Fasteners Plus - we sell a wide variety of fasteners & bolts to complete a variety of projects. Be sure to check out all of our connectors to complete your project, or shop all of our brands to find what you need.

Trust the Construction Experts at Fasteners Plus

If you’re having trouble finding the right products for your project, or need any advice, call us at 888-794-1590 or send a message at customerservice@fastenersplus.com - our product experts are happy to assist you. We truly value your business and are here to give you the service you deserve.