M6 Coach Bolts – Stainless Steel (DIN 603 Carriage Bolts) | Fixabolt®
Smooth-head finish. Secure fit. Built for timber.
Fixabolt® M6 coach bolts, also known as M6 carriage bolts, are designed for wood-to-wood or metal-to-wood connections where a clean, tamper-resistant finish is required. Manufactured to DIN 603, each bolt features a rounded dome head with a square neck beneath, which locks into timber and prevents the bolt from turning as the nut is tightened from the other side.
These 6mm bolts are ideal for lighter structural joinery, furniture builds, fencing, and outdoor timber installations, anywhere you need a secure fixing with a smooth, snag-free head.
Product Specifications
- Thread Size: M6 (6mm diameter)
- Standard: DIN 603 – coach/carriage bolt with square neck and domed head
- Lengths Available: From 60mm to 140mm
- Head Style: Round (mushroom/dome) head with square anti-spin neck
Material Options:
A2 (304) stainless steel - great for indoor and outdoor use
M6 coach bolts are commonly used in:
- Fencing, sheds, and garden structures
- Furniture assembly and outdoor seating
- Timber-to-metal bracket fixings
- Cladding and boarding
- Jobs where the bolt head is visible and needs to sit flush
The square neck bites into the timber as you tighten the nut, holding the bolt firmly in place without needing to grip the head. Pre-drilling is recommended for clean installation and alignment.
Shop related collections:
Stainless steel M8 coach bolts
Stainless steel M10 coach bolts
Stainless steel M12 coach bolts
Stainless steel M16 coach bolts
Why Fixabolt® Coach Bolts?
✔ Supplied with matching stainless nuts
✔ Made from A2 rust-resistant stainless steel
✔ Compliant with DIN 603 standard
✔ Bulk pricing available for trade
✔ Fast, reliable UK delivery
✔ Trusted by UK builders, landscapers, and tradespeople
Looking for other sizes? Browse our M8, M10 or M12 coach bolts for heavier applications.
Fixings that hold firm. Hardware that lasts. That’s Fixabolt®.
