Carriage Bolts Supplier in Cornwall

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Carriage bolts, also known as cup square bolts or coach bolts, are widely used for timber and construction applications where a smooth finished appearance and secure fixing are required. Their domed head and square neck design help prevent rotation during tightening, making them ideal for use in wood and soft materials.


At Duchy Fasteners, a comprehensive range of carriage bolts is held in stock to support construction, fencing, landscaping and general building projects across Cornwall and the wider UK. Customers can collect directly from the trade counter or order online for fast courier delivery.

What Are Carriage Bolts?

Carriage bolts are characterised by a rounded, domed head and a square section beneath the head. When installed, the square neck pulls into the timber and locks the bolt in place, preventing it from turning as the nut is tightened.


This design allows the bolt to be installed from one side only, creating a neat and tamper-resistant finish on the visible surface. Carriage bolts are commonly used where appearance matters or where access to both sides of the fixing is limited.

They are particularly popular in timber construction and external building applications.

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Carriage Bolts Held in Stock

Duchy Fasteners stocks a practical and trade-focused range of carriage bolts suitable for a wide variety of applications.

The range includes:


  • Cup square carriage bolts in multiple diameters

  • Various bolt lengths to suit different timber thicknesses

  • Matching nuts for secure assemblies

  • Washers for load distribution and surface protection

These carriage bolts are available in common metric sizes, making it easy to source compatible components for complete fixing systems.

Materials and Finishes Available

Carriage bolts are often used in environments where exposure to weather and moisture is expected. Duchy Fasteners stocks carriage bolts in finishes suited to both internal and external use.


Options include corrosion resistant finishes for outdoor applications and general purpose finishes for indoor or sheltered use. This allows customers to specify carriage bolts based on environmental conditions and project requirements.

Selecting the correct finish helps ensure long term durability and reliable performance.


This range ensures bolts can be specified based on performance requirements rather than availability, reducing the risk of premature failure or replacement.

Typical Uses for Carriage Bolts

Carriage bolts are commonly used in timber structures and construction projects where strength and appearance are important.


Typical applications include fencing, gates, decking, timber frames, garden structures, outdoor furniture and general carpentry. They are also used in playground equipment and landscaping projects where a smooth bolt head reduces snagging and improves safety.


Their versatility makes carriage bolts a staple fixing across building and maintenance trades.

Strength and Performance Benefits

The square neck design of a carriage bolt provides excellent resistance to rotation, allowing for secure tightening and strong clamping force. When specified correctly, carriage bolts provide dependable performance in both static and load bearing applications.


They are suitable for use in timber to timber and timber to steel connections, offering flexibility across a wide range of construction scenarios.


Correct sizing and use of washers helps ensure even load distribution and long service life.

Trade Counter Supply in Cornwall

Customers can purchase carriage bolts directly from the Duchy Fasteners trade counter at Cornwall Business Park. This allows trade professionals to inspect bolts, confirm sizes and collect fixings immediately.


The trade counter service is ideal for urgent jobs, fencing projects and ongoing construction work where fast access to stock is essential. Knowledgeable staff are available to assist with selecting suitable carriage bolts where required.

Online Ordering and UK Delivery

Carriage bolts are also available to order online with courier delivery across Cornwall and the rest of the UK. This service supports customers managing projects remotely or working across multiple locations.


Online access to the same extensive stock range ensures consistent availability for repeat orders and national supply needs.

Why Choose Duchy Fasteners for Carriage Bolts

Duchy Fasteners specialises in fixings and fastenings, allowing for deeper stock and wider choice than general merchants. This focus ensures customers can source carriage bolts in suitable sizes and finishes without compromise.


Flexible purchasing options, local availability and reliable delivery make Duchy Fasteners a dependable supplier for carriage bolts used in construction and timber projects.

FAQs About Carriage Bolts

What are carriage bolts used for?

They are commonly used for timber construction, fencing, decking and outdoor structures.

Are carriage bolts the same as coach bolts?

Yes, carriage bolts are also known as coach bolts or cup square bolts.

Do carriage bolts stop spinning when tightened?

The square neck beneath the head prevents the bolt from rotating once seated in timber.

Can I buy carriage bolts locally in Cornwall?

Yes, carriage bolts are available from the Duchy Fasteners trade counter in Scorrier.

Do you deliver carriage bolts across the UK?

Yes, carriage bolts can be ordered online and delivered nationwide.

How Does This Affect Your Project?

Choosing the correct carriage bolts ensures secure timber connections, improved safety and a clean finished appearance. By sourcing carriage bolts from Duchy Fasteners, customers benefit from specialist stock, reliable availability and flexible purchasing options.


Whether working on fencing, decking or structural timber projects, Duchy Fasteners provides carriage bolts designed to deliver strength and confidence where it matters most.