Coach Bolts

Bolts may be small, but they play a big role in the fastener industry, holding and uniting two pieces of material, whether different or similar. These screw fasteners are used in a variety of settings, including manufacturing, glass fittings, metal fittings, wood applications, and more. Carriage bolts are commonly used in woodworking applications; however, many people are unaware that they can also be utilised in materials other than wood.

What Are Carriage Bolts?

Carriage bolts, also known as plow bolts or coach bolts, have a design similar to regular bolts but with a distinctive domed head that is twice as wide. This head design is the primary difference between carriage bolts and standard bolts. Carriage bolts are used with or without washers, depending on the application. They are versatile screw fasteners suitable for various kinds of applications. When selecting carriage bolts, consider the specific requirements of your project. Popular options include M10 coach bolts, M6 coach bolts, M9 coach bolts, M12 and M16 coach bolts.

Design of Carriage Bolts

The primary distinction between carriage bolts and conventional bolts lies in their fastening mechanism. Carriage bolts feature a domed head and a shank with a square fitting just below the head. This square section grips the material, preventing the bolt from turning when tightened with a screwdriver or drilling tool. This design provides a secure and stable fastening, making carriage bolts ideal for applications requiring a strong, reliable hold.

Materials of Carriage Bolts

Carriage bolts are available in various materials, each offering unique benefits for different applications:

• Stainless Steel Carriage Bolts: Known for their corrosion resistance and durability, stainless steel carriage bolts are ideal for outdoor and marine applications where exposure to moisture and harsh conditions is common.
• Brass Coach Bolts: Brass bolts offer excellent corrosion resistance and a distinct appearance, making them suitable for decorative applications and situations where aesthetic appeal is important.
• Galvanised Steel Carriage Bolts: These bolts are coated with a layer of zinc, providing enhanced corrosion resistance, making them suitable for outdoor and high-moisture environments.
• Carbon Steel Carriage Bolts: Carbon steel bolts are strong and durable, suitable for heavy-duty applications. They are often used in construction and industrial settings where strength is crucial.

Industrial Usage of Carriage Bolts

Carriage bolts are versatile fasteners that find applications in various industrial settings due to their unique design and reliable performance.

Wood Applications

Carriage bolts are widely used in wood applications, providing a safe and dependable solution for joining two parts. They are commonly employed in home construction projects, including ready-to-assemble fences and furniture. The visual appeal and ease of use make carriage bolts a top choice for these applications.

Metal Applications

Carriage bolts are also ideal for metal applications. Their design allows them to securely fasten metal components without causing complications. When using carriage bolts in metal applications, it is essential to ensure that the fastener grips the surface securely and remains tight over time.

Other Industrial Applications

• Construction: Carriage bolts are extensively used in construction projects for joining wood and metal components. They provide a robust and reliable fastening solution that can withstand heavy loads and harsh conditions.
• Manufacturing: In manufacturing, carriage bolts are essential for assembling machinery and equipment, offering strength and durability.
• Automotive: Carriage bolts are used in the automotive industry to secure components and assemblies, ensuring stability and safety.
• Infrastructure: These bolts are crucial in infrastructure projects, such as bridge construction and public works, due to their ability to withstand significant stress and environmental factors.

How to Prepare for Installing Carriage Bolts

Proper preparation is crucial for the successful installation of carriage bolts, whether you are working with wood or metal.

For wood applications, drill a pilot hole slightly smaller than the bolt's diameter to ensure a tight fit and prevent splitting. Round head bolts are ideal because their shape and size keep the fastener from sinking into the wood, even without a washer.

In metal applications, the pilot hole should be slightly larger than the bolt's diameter to accommodate threading. Using a washer can help distribute the load and prevent damage. Ensure the metal surface is clean and debris-free for a smooth installation.

Explore our range of carriage bolts in our store to find the perfect fit for your project needs.

Delivery Information for Singapore

RS provides swift delivery of carriage bolts and other items, such as adhesive safety tapes and flexible cable trunking within Singapore. For online orders placed between Monday and Friday before 3:30 pm, next-working-day delivery is available if items are in stock. For more information on our comprehensive range of delivery services, including offline orders and consolidated shipments, please visit our delivery information page.