Carriage Bolts & Hex Nuts - Silver - M6 x 30mm
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B&QB&Q - TimcoCarriage Bolts & Hex NutsZinc (Size M6 X 30200 Pieces)
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OnBuy.comTimco 0630Cb Carriage Bolt And Hex Nut Bzp 6.0 X 30Mm Box Of 200 5055331802590
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Timco 0630Cb Carriage Bolt And Hex Nut Bzp 6.0 X 30Mm Box Of 200Free delivery in 1–3 days£16.05Visit shop →
Product Information
Full details
The TIMCO M6 x 30mm Carriage Bolt and Hex Nut set is designed for professional carpenters, woodworkers, and DIY enthusiasts needing a reliable, secure fastening solution for timber-to-timber or ironmongery-to-timber connections. Its standout feature is the square anti-spin shoulder, which prevents the bolt from rotating during tightening, ensuring a flush and secure fit. However, users should note that the grade 4.8 carbon steel construction is intended for general interior or moderate use and may require additional protective coatings if exposed to harsh, highly corrosive outdoor environments.
All features
| Colour | Silver |
|---|---|
| Model Part Number | 0630CB |
| Brand | TIMCO |
Extended Product Information
FAQs
What tool size is needed for these nuts?
These M6 nuts typically require a 10mm wrench or socket.
Are these bolts suitable for outdoor use?
They feature a zinc finish which offers basic protection, but they are best used in sheltered or dry environments.
Can I use these for hanging heavy ironmongery?
Yes, they are specifically designed for attaching ironmongery to timber, provided the load does not exceed the capacity of Grade 4.8 steel.
What does the 4.8 grade mean?
This refers to the tensile strength and yield strength of the steel, indicating it is suitable for general-purpose rather than heavy structural engineering.
Does the pack include washers?
No, the pack includes bolts and hex nuts only; you may need to purchase M6 washers separately if required by your application.
Troubleshooting
Bolt spins while tightening the nut
Ensure the square shoulder is properly seated into the timber by tapping the head firmly with a hammer.
Nut feels tight or stuck on the threads
Check the bolt threads for debris or wood shavings and clear them; use a light machine oil if resistance persists.
Pros and Cons
Pros
- Square shoulder eliminates the need to hold the bolt head while tightening
- Provides a clean, low-profile finish when installed correctly
- High-value pack of 200 pieces is ideal for large projects
- Standard M6 metric sizing ensures compatibility with common tools
Cons
- Grade 4.8 steel is not suitable for high-tensile structural load-bearing applications
- Zinc finish may oxidize if exposed to constant direct moisture
- Domed head is not designed for flush countersinking
Setup, Compatibility & Care
To ensure a professional finish, always use a drill bit consistent with the M6 diameter. Because the bolt relies on the wood grain to hold the square shoulder, avoid re-drilling the same hole multiple times, as this can strip the wood and cause the bolt to spin. While the zinc finish is durable, avoid using these bolts in direct contact with treated timbers that contain highly acidic preservatives, as this can accelerate corrosion. Store your remaining bolts in a dry, low-humidity environment to prevent white rust formation on the zinc surface.