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Power Tools Direct£7.46Visit shop Timco 12100Cbb Carriage Bolts & Hex Nuts - Zinc M12 X 100 Timbag 14
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B&Q£13.80Visit shop B&Q - Carriage Bolts Din603 & Hex Full Nut Din934 SilverM12 X 100
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The Timco Carriage Bolt & Hex Nut set is designed for professional carpenters, contractors, and DIY enthusiasts requiring a secure, non-rotational fastening solution for timber applications. Its primary benefit is the square anti-spin shoulder that locks into place during tightening, making it ideal for attaching ironmongery or joining heavy timber beams; however, users should note that the M12 diameter requires a pre-drilled pilot hole to prevent splitting of softer woods.
| Colour | Silver |
|---|---|
| Model Part Number | PTDTIM12100CBB |
| Brand | TIMco |
Yes, every bolt comes with a matching hex nut included in the package.
You should use a 12mm drill bit to ensure the bolt fits snugly while allowing the shoulder to seat.
Yes, for the 100mm length, this bolt is fully threaded.
Carriage bolts are specifically designed for timber applications where the square shoulder can grip the material. They are not recommended for metal-to-metal fastening.
The bolts feature a silver finish, suitable for standard timber applications.
They are suitable for exterior timber structures, though it is recommended to keep them away from direct, standing water contact to maintain longevity.
Ensure the square shoulder is properly seated in the wood by tapping the head firmly with a hammer.
Check that the pilot hole is clear of debris and is drilled to the correct 12mm diameter.
Ensure you are using a sharp drill bit and that the bolt is not placed too close to the edge of the timber.
To install, mark your drill point and use a 12mm drill bit to create a pilot hole through both pieces of timber. Insert the carriage bolt through the hole and tap it lightly with a hammer until the square shoulder is fully embedded in the wood. Thread the included hex nut onto the bolt and tighten until secure. Because the bolt is made of steel, avoid over-tightening in damp conditions to prevent moisture from pooling around the head, which can lead to oxidation. Periodically check for tightness in outdoor projects as timber may shrink over time due to seasonal weather changes.
