Collection: Carriage Bolts

Carriage bolts are ideal for fastening metal-to-metal and wood-to-metal parts. It features a smooth, domed head and a square section that ensures a secure fit and prevents spinning during installation.

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A carriage bolt, also known as a plow bolt or coach bolt, features a distinctive round head and flat tip design, with threading that extends partially along its shank. These versatile fasteners have earned their reputation as the go-to choice for woodworking applications, thanks to their unique structural characteristics and reliable performance.

Carriage bolts excel particularly in scenarios where wood needs to be securely fastened to metal surfaces. Their design makes them equally effective when joining two wooden pieces together. For specialized applications, there are specific variants that are engineered to provide metal-to-metal fastening capabilities.

One crucial aspect of working with carriage bolts is the absolute necessity of pre-drilling holes before insertion. This requirement stems from the bolt's distinctive head design - smooth and perfectly round - which makes it impossible to drive the bolt directly into materials using power tools or drilling equipment. This characteristic, while potentially limiting in some situations, actually contributes to the bolt's overall security once properly installed.

The engineering of a carriage bolt incorporates a square neck directly beneath the head, which serves a vital purpose. Once the bolt is inserted and tightened, this square section prevents any unwanted rotation, ensuring the connection remains stable and secure. The flat end of the bolt is specifically designed to work in conjunction with a washer and nut system for optimal fastening results.

The inclusion of washers when working with carriage bolts isn't just a recommendation - it's a crucial requirement. Washers play an essential role in distributing the pressure created when the nut pulls the bolt through the material, effectively preventing any potential damage or wear to the connected surfaces.

When it comes to measuring carriage bolts, precision is key. The measurement encompasses the entire length of the bolt, starting from the underside of the head and including the square neck portion. This comprehensive measurement ensures accurate sizing for your specific application needs.

If you need any assistance choosing the correct carriage bolt and accompanying washers and nuts for your project, please feel free to reach out to us and our Customer Service team will be more than happy to assist you.