Carriage bolts for wood and metal projects, engineered for secure, vibration-resistant fastening. Wavanta M6 Coach Bolts deliver corrosion resistance and precise threads so installers can work with confidence. Are these suited to decking, sheds and trailer repairs?
⚡ At a Glance
- • Build Quality: Carbon steel construction with smooth dome heads, no burs and precise, clean threads
- • Best for: DIYers, carpenters and timber frame builders fitting decking, benches and trailer boards
- • Not ideal for: Applications that require flush or countersunk fastenings for a recessed finish
Dome-head carriage bolts made from carbon steel with a uniform zinc-plated layer for rust resistance. Flanged nuts and square neck design lock into pre-drilled holes to prevent turning and reduce the need for extra washers.
Vibration-proof fastening - with integrated anti-loose flange nuts
Flanged nuts present a 360° wide-bearing surface that spreads clamping pressure evenly. The carriage bolt square neck seats into pre-drilled holes so the nut can be tightened without bolt rotation.
Secure joints hold firm under vibration on trailer decks and outdoor benches, reducing the chance of loosening and lowering maintenance.
Corrosion resistance for outdoor use - with uniform zinc plating
A zinc-plated finish forms a consistent protective layer over carbon steel components. The coating adapts to indoor and outdoor environments, enhancing surface protection against rust.
Fastenings resist surface corrosion in exposed conditions, helping structures remain reliable over time.
Clean, straightforward installation - with precise threads and smooth dome heads
Manufactured without burs and with symmetrical dome heads, bolts present precise, clean threads for consistent torque. The square neck prevents rotation so nuts can be tightened without holding the bolt head.
Faster assembly and fewer fiddly steps during installation, especially helpful when working alone or on repetitive outdoor builds.
✨ The 4 Key Reasons for Wavanta M6 Coach Bolts
- Precision threads – Ensure reliable, snag-free insertion into pre-drilled timber and metal holes
- Zinc-plated finish – Provide corrosion resistance suitable for indoor and outdoor exposure
- Integrated flanged nuts – Distribute load across a wide surface to resist loosening under vibration
- Square neck design – Lock into timber to prevent bolt rotation during tightening
📋 Technical Details at a Glance
- Size: M6 x 80mm
- Material: Carbon steel
- Finish: Zinc plated (anti-corrosion)
- Head type: Dome head carriage bolt
- Neck type: Square locking neck
❓ Frequently Asked Questions
Q: Do these bolts need washers?
A: Flanged nuts have a 360° wide-bearing surface that distributes pressure and, paired with the square neck, reduce the need for extra washers or lock nuts.
Q: Are these suitable for outdoor projects?
A: A uniform zinc-plated layer provides robust rust resistance, making the fastenings appropriate for both indoor and outdoor use.
Q: Will the bolts turn while tightening the nuts?
A: A locking square neck seats into pre-drilled holes to prevent bolt rotation when the nut is tightened, simplifying installation.
🏆 Our Verdict
Suitable for DIYers, carpenters and timber frame builders who need dependable fastenings for decking, sheds and trailers. Precise manufacture, zinc plating and the anti-loose flange nut design combine to deliver secure, low-maintenance joints. Durable materials and self-locking features make these a sensible long-term choice for outdoor timber and metal work.
