Different Types of Carriage Bolts

Carriage bolts are an essential type of fastener used in a variety of applications, particularly in woodworking and construction. Known for their rounded heads and square necks, carriage bolts are designed to be inserted into a pre-drilled hole and tightened with a nut. Their unique design prevents them from turning once they’re in place, which makes them ideal for securing parts together without requiring access to the underside after installation. Let’s explore the different types of carriage bolts, their applications, and advantages.

Standard Carriage Bolts

Standard carriage bolts are the most commonly used type. They feature a rounded head and a square neck, providing a secure grip once tightened. Typically made from steel and often galvanized or coated for corrosion resistance, these bolts are suitable for outdoor projects, construction work, and furniture assembly. Available in various lengths and diameters, they can accommodate different thicknesses of material.

Heavy-duty carriage bolts are designed for more demanding applications. With a larger diameter and longer length, they are ideal for securing heavy timber structures, such as decks and large outdoor furniture. Their robust construction enables them to withstand greater loads and stresses, making them a preferred choice among contractors and builders.

Stainless Steel Carriage Bolts

For projects that require resistance to corrosion and rust, stainless steel carriage bolts are an excellent choice. These bolts maintain their integrity in harsh environments, making them suitable for marine applications, outdoor furniture, and any other situations where moisture is a concern. The durability of stainless steel also contributes to the longevity of structures that utilize these fasteners.

Hex Head Carriage Bolts

Hex head carriage bolts offer an alternative to the traditional rounded head. The hexagonal head allows for the use of a wrench for tighter torquing, which can be advantageous in certain applications. These bolts are commonly used in industrial settings where mechanical strength and a secure fit are required. The hex head design makes it easier to apply more force, ensuring a tighter connection compared to standard rounded head bolts.

Specialty Carriage Bolts

In addition to the aforementioned types, there are specialty carriage bolts designed for specific applications. These can include flanged head carriage bolts, which provide a larger surface area for greater stability, and those with built-in washers for improved grip. Such variations cater to unique project needs, allowing for greater versatility in how and where these fasteners are employed.

Conclusion

Carriage bolts come in various types, each tailored for specific applications and needs. Understanding the differences between standard, heavy-duty, stainless steel, hex head, and specialty carriage bolts is crucial for selecting the right fastener for your project. Whether securing wooden structures, assembling furniture, or constructing outdoor installations, the right carriage bolt will ensure a solid and lasting connection.