Carriage Bolts & Hex Nuts - M10 x 160mm
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The TIMco M10 x 160mm Carriage Bolts are professional-grade fasteners designed for carpenters, builders, and DIY enthusiasts requiring a secure, vibration-resistant connection for timber-to-timber or ironmongery-to-timber projects. Featuring a distinctive domed head and a square anti-spin shoulder, these bolts provide a clean, snag-free finish and easy single-sided installation; however, users should note that the 160mm length is partially threaded, making it critical to verify the required clamping thickness before purchase.
All features
| Model Part Number | 10160CB |
|---|---|
| Brand | TIMco |
Extended Product Information
FAQs
What tool size do I need for the hex nut?
These M10 hex nuts typically require a 17mm socket or spanner.
Are these bolts suitable for outdoor use?
The zinc finish provides basic corrosion resistance for outdoor timber projects, but they are not stainless steel and should be avoided in marine or highly acidic environments.
Does the bolt come fully threaded?
No, at 160mm length, this bolt is partially threaded.
Do I need a washer with these?
While not strictly required, using a flat washer under the nut is recommended to distribute pressure and prevent the nut from sinking into the wood.
What is the head diameter of this bolt?
The domed head has a diameter of 24.00mm.
Can I use these for metal-to-metal connections?
No, carriage bolts are specifically designed for timber-to-timber or timber-to-ironmongery applications due to the square shoulder design.
Troubleshooting
Bolt spins when trying to tighten the nut
Ensure the square shoulder is fully driven into the timber using a hammer or mallet to create an anti-spin lock.
Nut will not thread onto the bolt
Check the threads for debris or damage; if clear, ensure you are using the included matching nut and not a different thread pitch.
Bolt is too long for the application
Use extra washers to take up the space or consider a shorter bolt length if the threads do not engage properly.
Pros and Cons
Pros
- Square shoulder allows for efficient single-person installation
- Clean, professional-looking domed finish
- Includes matching nuts for a complete solution
- High-quality carbon steel construction
- Standard metric M10 sizing ensures wide compatibility
Cons
- Partially threaded design limits usage in very thin materials
- Not intended for high-stress marine or corrosive environments
- Requires a pilot hole to accommodate the square shoulder
Setup, Compatibility & Care
To install, first drill an M10 clearance hole through your timber. Use a slightly smaller diameter bit if you want the wood to grip the square shoulder tightly, or exactly M10 for a standard fit. Once the bolt is inserted, use a standard 17mm socket or wrench to tighten the hex nut. To maintain the life of the zinc plating, avoid overtightening with heavy-duty impact drivers, as this can strip the threads or damage the protective finish. If installing in damp or outdoor environments, consider applying a thin layer of weather-resistant grease to the threads to further prevent future corrosion.