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Power Tools Direct£4.85Visit shop Timco 12120Cb Carriage Bolts & Hex Nuts - Zinc M12 X 120 Box 10
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B&Q£10.96Visit shop B&Q - TimcoCarriage Bolts & Hex NutsZinc (Size M12 X 12010 Pieces)
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The TIMco 12120CB Carriage Bolt and Hex Nut set is designed for carpenters, landscapers, and DIY enthusiasts who need a reliable, high-strength solution for fastening heavy timber projects. These M12 bolts provide exceptional clamping force and include a square shoulder design to prevent rotation during installation, though users should be aware that the carbon steel construction requires a protective finish in highly corrosive environments despite the zinc coating.
| Model Part Number | 12120CB |
|---|---|
| Brand | TIMco |
Yes, each box contains 10 carriage bolts and 10 matching hex nuts.
Yes, this specific 120mm length is fully threaded.
The domed head has a diameter of 30.00mm.
They feature a zinc finish, which is suitable for standard outdoor applications, though they should be protected in high-corrosion or coastal areas.
Use a drill bit that matches the 12mm diameter to allow for a secure fit while still allowing the bolt to pass through the timber.
Yes, as they are manufactured from carbon steel, they will react to a magnet.
Ensure the square shoulder has been fully seated into the timber by tapping it with a mallet until it is flush.
Check for debris in the threads and ensure the nut is not being cross-threaded during the initial rotation.
For optimal results, ensure the hole is drilled straight to allow the square shoulder to seat evenly. Because these are M12 bolts, use a 12mm or 13mm drill bit depending on the density of the wood to allow for a snug fit. While the Zinc plating provides corrosion resistance, avoid using these in contact with treated woods containing high copper levels unless a secondary barrier is used. Periodically check nuts for tightness, especially in exterior timber projects where wood expansion and contraction cycles may occur. Store in a dry, low-humidity area to maintain the integrity of the zinc finish.
