Forgefix Carriage Bolt & Nut - White - M12 x 180mm

Name: Forgefix Carriage Bolt & Nut - White - M12 x 180mm
Brand: Forgefix
SKU: neclm2mg4g
Availability: InStock

These Forgefix Carriage Bolts are Zinc Plated, and ideal for timber to timber joining. They come c...

Best current price£0.86from Power Tools Direct

Colour

Multicolor Silver White

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Product Information

Full details

The Forgefix Coach Bolt & Nut M12 x 180 are versatile and essential fixings for DIY enthusiasts and professionals working with timber. These zinc-plated bolts, featuring a square neck to prevent twisting, provide robust and secure fastenings for low load-bearing applications such as assembling garden furniture, constructing pergolas, or fixing fence panels. While incredibly effective for their intended purpose, it is crucial to remember they are specifically designed for low-load scenarios and not heavy structural use. This guide will walk you through their key features, optimal use, and maintenance to help you get the most value from your purchase.

All features

Colour	White
Model Part Number	5CB12180
Brand	Forgefix

Extended Product Information

FAQs

What does 'M12 x 180' mean?

M12 refers to the nominal diameter of the bolt's thread in millimeters (approximately 12mm). 180 refers to the length of the bolt in millimeters, measured from under the head to the tip of the thread.

Can these bolts be used outdoors?

Yes, the zinc-plated finish provides good resistance against rust and corrosion, making them suitable for outdoor use in various weather conditions.

Do I need to drill a pilot hole before inserting the bolt?

Absolutely. A pilot hole is essential for proper installation. It should be slightly larger than the bolt's shank but smaller than the square neck, allowing the neck to bite into the timber for a secure, non-spinning fit.

Are these bolts suitable for heavy structural applications?

No, these coach bolts are specifically designed for low load-bearing applications, such as assembling garden furniture, pergolas, or fence panels. For heavy structural applications, different types of fasteners with higher load ratings should be used.

What tools are required for installation?

You will need a drill with an appropriately sized drill bit for the pilot hole, and a spanner or wrench to tighten the hex nut. A hammer may also be useful to gently tap the bolt head to seat the square neck.

What is the purpose of the square neck?

The square neck under the bolt head is designed to embed itself into the timber as the bolt is inserted. This prevents the bolt from rotating when you tighten the nut, allowing for easier and more secure fastening, often by a single person.

Troubleshooting

Bolt spins when tightening the nut.

Ensure the square neck under the bolt head is fully embedded into the timber. You may need to gently tap the bolt head with a hammer to seat it completely into the pre-drilled hole.

Nut is difficult to turn or won't thread onto the bolt.

Check for cross-threading by removing the nut and re-aligning it carefully. Ensure the bolt is straight and not bent. If threads are damaged, replace the bolt and nut.

Connection feels loose even after tightening.

Verify that the timber is not compressed or rotting around the bolt. Consider adding washers under the nut and bolt head to distribute pressure more evenly and improve grip. Ensure the pilot hole was not drilled too large.

Bolt appears rusted or corroded prematurely.

While zinc-plated for protection, extreme moisture or harsh chemicals can degrade the coating. Ensure proper storage before use and consider applying a clear protective sealant over installed bolts in very exposed outdoor areas.

Pros and Cons

Pros

Twist-Resistant Installation: The square neck ensures the bolt remains stationary when tightening the nut, simplifying installation and enhancing security.
Corrosion Protection: Zinc plating provides good resistance to environmental factors, prolonging the lifespan of the fixing, especially outdoors.
Versatile Timber Applications: Excellently suited for a wide range of timber-to-timber joining needs, from DIY projects to light construction.
Complete Kit: Each bolt comes with its matching hex nut, so no separate purchases are needed for basic fastening.
Reliable for Intended Use: Delivers strong and stable connections within its specified low load-bearing scope.

Cons

Not for High Load Applications: These bolts are specifically designed for low load-bearing uses and are not suitable for heavy structural or critical load applications.
Requires Pre-Drilling: Proper installation necessitates drilling an accurately sized pilot hole, which adds a step to the process.
Application Specific: Primarily designed for timber, limiting their use in other material types without additional components or modifications.

Setup, Compatibility & Care

Setup Instructions

Prepare the Timber: Ensure the timber pieces to be joined are cut cleanly and aligned properly.
Drill Pilot Hole: Using a drill bit slightly larger than the diameter of the bolt's shank (M12) but smaller than the square neck, drill a pilot hole through both pieces of timber. The hole should be straight and pass completely through.
Insert Bolt: Insert the coach bolt through the pre-drilled holes. You may need to gently tap the head of the bolt with a hammer to fully seat the square neck into the timber, ensuring it bites securely and prevents rotation.
Attach Nut: Place the hex nut onto the threaded end of the bolt and tighten it using an appropriately sized spanner or wrench until the connection is firm and secure. Do not overtighten, as this can damage the timber or strip the threads.

Compatibility

Materials: Primarily designed for joining timber to timber. Can also be used with timber and other materials (e.g., metal plates) if appropriate washers and pre-drilling are used.
Applications: Best suited for low load-bearing applications such as:
Garden furniture
Pergolas, gazebos, and arbors
Fence panels and gates
Light sheds and outbuildings frames
Non-critical timber joist construction
Tools: Compatible with standard spanners, wrenches, and drills for installation.

Care and Maintenance

Storage: Store unused bolts and nuts in a dry environment to prevent premature corrosion, even with the zinc plating.
Inspection: Periodically inspect installed bolts, especially in outdoor applications, for any signs of loosening or corrosion.
Cleaning: If dirt or debris accumulates, wipe the bolts clean with a damp cloth. Avoid harsh chemicals that could compromise the zinc plating.
Retightening: Over time, timber can shrink or expand. Check connections and retighten nuts if any loosening is detected to maintain structural integrity.