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Power Tools Direct£1.24Visit shop Timco 08100Cbp Carriage Bolts & Hex Nuts - Zinc M8 X 100 Timpac 4
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The TIMco M10 x 300mm Carriage Bolt is a heavy-duty fastening solution designed for construction professionals and DIY enthusiasts working on timber-based projects. Featuring a robust grade 4.8 carbon steel construction with a protective zinc finish, this bolt provides secure clamping for ironmongery and structural timber connections; however, its substantial 300mm length requires pre-drilled holes and enough clearance behind the installation surface.
| Colour | Silver |
|---|---|
| Model Part Number | 10300CB |
| Brand | TIMco |
Yes, each carriage bolt is supplied with a matching hex nut.
No, per the specifications, lengths of 160mm and above have a 150mm thread length.
Carriage bolts are specifically designed for timber where the square shoulder can sink into the wood; they are not ideal for flat metal-to-metal surfaces.
This bolt is manufactured from grade 4.8 carbon steel.
They feature a zinc finish which offers standard corrosion resistance, though they are not rated for extreme marine or acidic conditions.
Ensure the square shoulder is fully seated into the timber by tapping it with a hammer before applying the nut.
Check that the hole is clear of debris and drilled at a 90-degree angle; you may need to use a slightly larger drill bit to account for timber expansion.
For optimal results, ensure the hole is drilled straight through the timber to prevent the bolt from binding. Use a hammer to seat the square shoulder into the wood before attempting to tighten the nut. While the zinc finish provides good protection, if you are using these in treated timber or outdoor environments prone to moisture, occasionally check the nuts for tightness. Avoid using impact drivers with excessive force to prevent stripping the threads of the bolt.
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