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Brand: ALWAYS FIRST 4 FIXINGS

Coach Bolts Carriage Bolts Cup Square Bolts inc Nuts

£5.60 £25.34Price range: £4.67£5.60 through £21.12£25.34 Excl. VATIncl. VAT

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– High-Quality Steel Construction: Provides unmatched durability and strength, ensuring reliable fastening in heavy-duty applications.
– Dome-Shaped Head: The rounded head design prevents snagging and offers an aesthetically pleasing finish.
– Square Neck Design: Prevents bolt rotation during installation, allowing for a secure and stable fit in wooden structures.
– Variety of Sizes: Available in multiple lengths and diameters to cater to different project specifications and requirements.
– Corrosion-Resistant Coating: Ensures longevity and performance in outdoor and harsh environmental conditions.

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Discover the Strength and Versatility of Coach Bolts – Your Ultimate Fastening Solution

 

The Coach Bolt, also known as a carriage bolt, Cup Square Bolts, Purlin bolts or round head square neck bolt, is a staple in the world of construction and carpentry.

Known for its strength and reliability, the Coach Bolt is manufactured from premium grade steel, providing a fastening solution that is both durable and versatile.

Designed with a distinctive dome-shaped head and a square neck, this bolt is engineered to prevent rotation during installation, ensuring a secure and self-locking function and tight fit. The square neck grips into the part being fixed, allowing for easy assembly and disassembly when needed.

These bolts are particularly effective in fastening timber to timber, or timber to metal, making them indispensable in construction projects such as building wooden decks, garden furniture, farm buildings and even in timber frame construction.

Available in a range of sizes and finishes, Coach Bolts can be selected to meet specific project requirements, ensuring optimal performance regardless of the application.

Their corrosion-resistant coating provides added protection against the elements, making them suitable for outdoor use where longevity and reliability are paramount.

Installation is straight forward, requiring only basic tools, making them accessible for both professional builders and DIY enthusiasts.

Whether you are constructing a new deck, repairing an old fence, or undertaking any project that requires secure and stable fastening, Coach Bolts offer a trustworthy solution.

Coach Bolts Benefits:

– Exceptional Strength and Durability: Engineered from high-quality steel, Coach Bolts provide robust fastening for timber structures, ensuring long-lasting performance.
– Versatile Application: Ideal for a variety of construction and agricultural projects, from securing wooden frames and fences to assembling garden furniture, timber decks, wooden gates offering flexibility for DIY enthusiasts and professionals alike.
– Corrosion Resistance: Zinc plated coating gives a protective layer to withstand harsh weather conditions, ensuring your structures remain secure and intact over time.
– Easy Installation: Designed with a dome-shaped head and square neck, preventing rotation during installation and ensuring a secure fit and self-locking function with minimal effort.
– Cost-Effective Solution: Provides an economical option for high-load applications, reducing the need for frequent replacements and repairs.

Coach Bolts Questions and Answers People Ask:

1. What are Coach bolts used for?
Coach bolts are primarily used for fastening timber to timber or timber to metal. They are commonly employed in construction projects involving wooden structures, such as decks, fences, farm buildings and garden furniture.

2. How do you install a Coach bolt?
To install a Coach bolt, drill a hole through the materials you wish to fasten, insert the bolt, and secure it with a nut on the opposite side. The square neck of the bolt will hold it in place, preventing rotation.

3. Are Coach Bolts suitable for outdoor use?
Yes, Coach bolts are suitable for outdoor use due to their corrosion-resistant coating, which protects them from rust and weather-related damage.

4. What sizes do Coach bolts come in?
Coach bolts are available in various sizes, typically ranging from 6mm to 12mm in diameter and lengths from 40mm to 300mm, allowing you to choose the right size for your specific project needs.

5. Can Coach bolts be used in metal-to-metal applications?
While Coach bolts are designed primarily for wood-to-wood or wood-to-metal applications, they can be used in metal-to-metal fastening, provided the materials are not too hard for the bolt’s neck to grip.

☁ Cloud Rating Approx. Salt Spray Hours* Description
☀ 1 Cloud < 100 hrs Indoor / fully sheltered use
🌤 2 Clouds ~100 – 500 hrs Indoor + sheltered outdoor
🌦 3 Clouds ~500 – 1,000 hrs General outdoor use with specialist coating
🌧 4 Clouds ~1,000 + hrs A2 stainless steel – exterior use inland
⛈ 5 Clouds 1,000 + hrs / “marine grade” A4 stainless – coastal / high-exposure use

*Approximate values based on typical corrosion testing standards (salt spray testing to first rust).

 

Marc’s Cloud Rating – Always First 4 Fixings Corrosion Resistance Guide

Choosing the right screw or fixing is all about matching it to the environment — especially when it comes to

corrosion resistance.

That’s why at Always First 4 Fixings, we’ve created a quick and simple way to help you pick the perfect product for any job:

☁️ Marc’s Cloud Rating

Each fixing on our site is given a Cloud Rating (☀️ to ⛈️) — your easy guide to how well it stands up to the weather. The more clouds, the more corrosion-resistant the fixing!  

☀️ 1 Cloud – Indoor / Covered Outdoor Use

Designed for: Dry indoor environments or outdoor areas completely covered from the elements. Perfect for internal projects, garages, lofts, or sheltered spaces where moisture exposure is minimal.

🌤️ 2 Clouds – Indoor / Sheltered Outdoor Use

Designed for: Indoor use or external areas with some protection from direct rain or weather. Ideal for porches, under decking, or covered outdoor structures where occasional moisture may occur.

🌦️ 3 Clouds – General Outdoor Use

Designed for: Both indoor and outdoor use. Typically features specialist corrosion-resistant coatings and undergoes 500–1000 hours salt spray testing. Great for garden furniture, fencing, sheds, or exposed outdoor areas not constantly hit by sea air.

🌧️ 4 Clouds – A2 Stainless Steel

Designed for: Tough external environments. Made from A2 stainless steel, these screws are durable and weather-resistant — ideal for outdoor projects more than 10 miles inland. Reliable for all general external applications and completely fine for indoor use too.

⛈️ 5 Clouds – A4 Marine Grade Stainless Steel

Designed for: The harshest, most demanding environments. Made from A4 stainless steel (marine grade), these fixings offer maximum corrosion resistance — perfect for coastal areas, marine use, or anywhere exposed to salt air and constant moisture. The “big daddy” of weatherproof fixings — unbeatable outdoors, worry-free indoors.  

How to Use Marc’s Cloud Rating

You’ll find the Cloud Rating (☀️–⛈️) shown on each product across our website. Simply match the rating to your project’s environment and know exactly how your fixing will perform — rain or shine! Always First 4 Fixings – Helping You Choose with Confidence.
Size

M6 x 25mm (200), M6 x 30mm (200), M6 x 40mm (200), M6 x 50mm (200), M6 x 65mm (100), M6 x 75mm (100), M6 x 100mm (100), M6 x 130mm (100), M6 x 150mm (100), M8 x 50mm (100), M8 x 65mm (100), M8 x 75mm (100), M8 x 80mm (50), M8 x 90mm (50), M8 x 100mm (100), M8 x 110mm (50), M8 x 130mm (50), M8 x 150mm (50), M8 x 160mm (50), M8 x 180mm (50), M8 x 200mm (50), M10 x 40mm (50), M10 x 50mm (50), M10 x 65mm (50), M10 x 70mm (50), M10 x 75mm (50), M10 x 80mm (50), M10 x 100mm (50), M10 x 110mm (50), M10 x 130mm (25), M10 x 150mm (25), M10 x 160mm (25), M10 x 180mm (25), M10 x 200mm (25), M10 x 220mm (25), M10 x 240mm (25), M10 x 260mm (25), M10 x 280mm (10), M10 x 300mm (25), M12 x 75mm (50), M12 x 90mm (50), M12 x 100mm (50), M12 x 110mm (50), M12 x 130mm (25), M12 x 150mm (25), M12 x 180mm (25), M12 x 200mm (25), M12 x 220mm (25), M12 x 240mm (25), M12 x 260mm (25), M12 x 300mm (25)

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Shipping Policy

Always First 4 Fixings Courier Delivery ServiceAt Always First 4 Fixings, we know that your projects rely on fast, dependable delivery. That’s why we offer flexible UK shipping options designed for tradespeople and businesses: Fast Dispatch: Orders are processed and dispatched within 24 hours on working days. Free shipping on all orders over £60 (UK mainland). Express options available to keep your jobs moving. Click & Collect: Order online and pick up at your convenience (if applicable). Reliable Couriers: We use trusted UK carriers to ensure your fixings and fasteners arrive on time. You’ll receive tracking details as soon as your order leaves our warehouse. Delivery times may vary depending on location and availability, but we work hard to get your order to you as quickly as possible.  

Returns Policy

We want you to be fully confident when ordering from Always First 4 Fixings. If your supplies aren’t right for any reason, we make returns straightforward: Return unused and undamaged items in original packaging within 30 days. Don’t forget your proof of purchase or order confirmation. Once we receive your return, we’ll process your refund or exchange promptly. Certain items may have specific exclusions or conditions—please read our detailed returns policy or contact us if you have questions. Our team is always here to help ensure you get exactly what you need for the job.

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