Galvanised Coach Bolts

Galvanised Coach Bolts: Heavy-Duty Fasteners for Outdoor and Structural Applications

Galvanised coach bolts are robust, corrosion-resistant fasteners specifically designed for use in timber and metal connections. Known for their distinctive domed heads and square necks, galvanised coach bolts provide a secure, tamper-resistant fit ideal for outdoor structures, fencing, and construction projects. The galvanised coating protects the bolts from rust and weathering, ensuring long-term durability in harsh environments.

Whether you're building decking, joining timber frames, or working on large-scale construction, galvanised coach bolts offer unmatched strength, stability, and resistance to the elements.

What Are Galvanised Coach Bolts?

Galvanised coach bolts, also known as carriage bolts in some regions, feature a rounded head with a square neck underneath that prevents the bolt from turning when the nut is tightened. These bolts are coated in zinc through a hot-dip galvanising process, creating a strong barrier against rust and corrosion.

Key features of galvanised coach bolts include:

• Domed Head: Smooth, rounded appearance suitable for exposed applications.

• Square Neck: Embedded into the material to prevent rotation.

• Threaded Shank: Ensures a strong, secure hold when used with washers and nuts.

• Zinc Coating: Provides superior weather resistance and extends lifespan.

The design of galvanised coach bolts ensures they are both functional and safe for use in areas where exposed fasteners are needed.

Benefits of Galvanised Coach Bolts

1. Superior Corrosion Resistance
   Thanks to their zinc coating, galvanised coach bolts withstand moisture, chemicals, and outdoor exposure. They are ideal for decks, fences, and structures exposed to rain or humidity.

2. High Strength and Load-Bearing Capacity
   Made from strong steel and treated for durability, galvanised coach bolts are capable of handling heavy loads, making them suitable for both domestic and commercial applications.

3. Tamper-Resistant Design
   The rounded head and square neck of galvanised coach bolts make them difficult to remove from the outside without access to the nut, providing a level of security.

4. Clean Aesthetic Finish
   The smooth, low-profile head of galvanised coach bolts offers a neat finish, especially important in visible installations like playgrounds, garden structures, and furniture.

5. Long-Lasting Performance
   Even in coastal, humid, or agricultural environments, galvanised coach bolts maintain structural integrity over time, reducing maintenance costs and ensuring safety.

Common Applications of Galvanised Coach Bolts

• Decking Construction: Perfect for securing joists and framing components.

• Fencing and Gates: Commonly used in joining wooden panels to posts and securing hinges.

• Outdoor Furniture: Adds both aesthetic appeal and long-term durability.

• Structural Timber Framing: Used in barns, sheds, pergolas, and gazebos.

• Playgrounds and Parks: Safe and durable option for public installations.

Wherever strength and corrosion resistance are required, galvanised coach bolts provide a reliable solution.

How to Install Galvanised Coach Bolts

1. Drill a Clearance Hole
   Create a hole that matches the bolt’s shank diameter. Ensure the square neck will bite into the wood.

2. Insert the Bolt
   Push the galvanised coach bolt through the material so that the square neck fits tightly into the hole.

3. Secure with Washer and Nut
   On the opposite side, use a washer and nut to tighten the connection. The square neck keeps the bolt from spinning during tightening.

4. Tighten Securely
   Use a wrench to fully tighten the nut, ensuring the galvanised coach bolt is secure and the head sits flush with the surface.

How to Choose the Right Galvanised Coach Bolts

When selecting galvanised coach bolts, keep these considerations in mind:

• Length and Diameter: Choose based on the material thickness and load requirements.

• Thread Type: Coarse threads are ideal for wood; fine threads may suit metal.

• Grade and Strength: Look for high-grade steel for structural uses.

• Type of Galvanising: Hot-dip galvanised bolts offer thicker zinc coatings than electro-galvanised options.

Conclusion

Galvanised coach bolts are a top choice for professionals and DIYers looking for reliable, corrosion-resistant fastening in wood or metal projects. Their sturdy construction, tamper-resistant design, and weatherproof coating make them ideal for outdoor and structural applications. From decking to fencing, galvanised coach bolts provide long-term performance, strength, and peace of mind.

Pictures

Product drawing

Product Specification