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The Timco Carriage Bolt (M8 x 110) is designed for contractors, builders, and DIY enthusiasts who need a reliable fastening solution for heavy-duty timber applications or mounting ironmongery to wooden structures. It features a signature domed head with a square anti-spin shoulder that self-locks into the wood for a flush, secure finish. The primary caveat is that it requires a pre-drilled hole sized precisely for an M8 shank to ensure the square shoulder can properly seat itself without splitting the timber.
| Colour | Silver |
|---|---|
| Model Part Number | M8 X 110 |
| Brand | TIMco |
You should use an 8mm drill bit for an M8 bolt to ensure a snug fit.
They feature a zinc finish which provides some corrosion resistance, but they are best used in sheltered outdoor areas. For coastal or highly exposed areas, stainless steel may be required.
This set includes the bolt and hex nuts. Ensure you have the appropriate size washers on hand if your specific application requires them to protect the timber surface.
The domed head diameter is 20.00mm.
No, these are specifically designed for timber-to-timber or ironmongery-to-timber applications and should not be used in primary steel-to-steel structural connections.
The square shoulder has not seated into the wood. Remove the nut and lightly tap the domed head with a hammer to pull the square profile into the pilot hole.
You can carefully trim the excess threaded end using a hacksaw or bolt cutter, ensuring you file the edges afterward so the nut can be removed.
To install, always use an appropriately sized drill bit to avoid damaging the timber grain. If the bolt head does not pull into the wood easily, do not force it, as you risk splitting the timber or deforming the square shoulder. For maintenance, check the tension of the nuts annually, as timber can shrink over time due to seasonal moisture changes, which may loosen the connection. Ensure the bolt is kept dry during storage to prolong the lifespan of the zinc finish. If installing in highly exposed areas, consider applying a thin layer of weather-resistant grease to the threads to prevent long-term oxidation.
