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TERF Carriage Bolts and Nuts: Durable M6 Fastenings for Secure Fixings

TERF® M6 X 150mm Cup Square Carriage Bolt and Nut M6 (6mm) X 150mm Coach Bolts with Hexagon Nuts - Pack of 10
4.6
[10-Piece Pack]  Includes 10 cup square carriage bolts and matching nuts, ideal for small projects.
[Zinc-Plated Steel]  Durable corrosion-resistant finish protects bolts for long-lasting outdoor and indoor use.
[M6 x 150mm Size]  Precise M6 diameter and 150mm length for strong, secure fastening.
[Mushroom/Dome Head]  Classic low-profile head offers neat finish and prevents pull-through.
[ISO 965 Tolerance]  Manufactured to ISO 965 standard for reliable thread accuracy and fit.
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Hardware fastenings designed to secure timber and metal joints reliably. TERF Carriage Bolts and Nuts bring confidence for DIYers and tradespeople needing dependable fixings. Are the M6 x 150mm size and zinc-plated finish the right choice for your project?

⚡ At a Glance
  • Holding Strength: Robust fastening from M6 (6mm) diameter and 150mm length
  • Best for: DIYers, joiners and contractors securing hasps, staples and hinges
  • Not ideal for: Projects that require countersunk or concealed fixings

M6 (6mm) x 150mm zinc-plated steel carriage bolts with mushroom head and matching nuts, supplied as a pack of 10. Metric tolerance to ISO 965 ensures consistent thread fit for standard nuts.


Secure fixings for thick sections – With M6 (6mm) x 150mm length

150mm length gives extended thread engagement, allowing nuts to clamp through thicker assemblies while the M6 diameter matches standard metric threads.

Reliable mechanical joints for joining thick timbers or bolting through multiple layers. User reviews report a perfect fit and dependable fastening at this length.

Corrosion resistance for damp conditions – With zinc plated steel

Zinc plating applies a protective metallic coating to the steel, slowing surface oxidation compared with untreated steel.

Surface protection helps the fixings remain usable and presentable in damp environments. Reviews note durable performance and strong construction.

Neat, secure heads – With mushroom/dome head and square neck

Mushroom or dome head sits proud of the surface while the square neck grips timber to prevent rotation during tightening.

Tidy external appearance with a locking neck that makes assembly easier and reduces the chance of the bolt turning while tightening the nut.

✨ The 4 Key Reasons for TERF Carriage Bolts and Nuts
  1. Zinc-plated finish – Slows surface rust, extending usable life for damp environments
  2. ISO 965 metric tolerance – Ensures consistent thread fit with standard nuts for reliable tightening every time
  3. Mushroom head profile – Offers a tidy exterior, reduces snagging risk on nearby materials
  4. Pack of 10 – Provides enough fixings for small projects and repairs
📋 Technical Details at a Glance
  • Category: Carriage bolts and nuts (hardware)
  • Brand: TERF
  • Product ID: B0BRBQ7LYP
  • Material: Zinc plated steel
  • Size: M6 (6mm) x 150mm
❓ Frequently Asked Questions

Q: What size are the bolts?

A: M6 (6mm) x 150mm.

Q: How many bolts and nuts are included?

A: The pack contains 10 carriage bolts with matching hexagon nuts.

Q: Are these suitable for outdoor use?

A: Manufactured from zinc plated steel, they have a protective coating that helps reduce surface corrosion in damp conditions.

🏆 Our Verdict

The TERF Carriage Bolts and Nuts suit DIYers and tradespeople who need reliable M6 fixings for medium-thickness projects. Zinc-plated steel construction, M6 x 150mm sizing and a mushroom head with square neck deliver practical and durable fastenings for hasps, staples and hinges. Pack of 10 plus ISO 965 tolerance make them a sensible, long-lasting choice for small-scale work.