2x TROJAN Trailer U BOLTS M12 Square 51x110mm Galvanised U-Bolts Nuts Washer (SKU: 271060)
$20.00
M12 square galvanised U-bolts designed for 50mm round trailer axles. Strong, rust-resistant and suitable for medium-load trailer setups.
Out of stock
Product Overview:
The TROJAN M12 Square U-Bolt Set (51x110mm) is a durable and corrosion-resistant solution for mounting 50mm round axles to trailer chassis. With a strong M12 thread and galvanised finish, this pair of U-bolts offers lasting performance for medium-load trailers in all weather conditions.
Specifications:
- 51mm internal width – ideal for clamping 50mm round axles
- 110mm arm length – provides firm hold for suspension setups
- 40mm thread length – easy to tighten with included hardware
- 12mm diameter (M12) – suitable for moderate towing demands
- Galvanised finish – rust-resistant coating for outdoor and marine use
- Includes nuts and washers – ready-to-install set
Common Applications:
- Mounting 50mm round axles to trailers and caravans
- Securing leaf spring brackets or axle pads
- Trailer suspension maintenance and axle upgrades
Perfect for road or marine trailers, these M12 U-bolts combine strength with durability. If you’re looking for a dependable fastening solution that stands up to the elements, this set will deliver.
Related
Frequently Asked Questions
Q: Will this fit a 50mm round axle?
A: Yes, the 51mm width is designed to suit 50mm round axles perfectly.
Q: Does it include nuts and washers?
A: Yes, it comes complete with matching hardware for installation.
Q: Is it suitable for boat trailers?
A: Definitely. The galvanised coating makes it suitable for marine use.
Q: Can I use this with a square axle?
A: This version is intended for round axles. For square axles, a different U-bolt style may be more appropriate.
Evaluation & Recommendations
This U-bolt is perfect for users who need a strong, mid-length mounting solution for 50mm round axles. Recommended for:
- Boat trailers exposed to saltwater
- Medium-duty box or camper trailers
- Users replacing old, rusted U-bolts
For heavier trailers or axles larger than 50mm, a longer or wider U-bolt may be required. If you’re unsure, reach out and we’ll help you find the perfect fit.
Installation Tips:
- Align the U-bolt around the axle and through the mounting bracket
- Fit included washers and nuts
- Tighten both sides evenly for a secure hold
- Check after initial trip to confirm torque remains solid

MANUTEC Trailer Round U-Bolt 52x175mm Long – Zinc Finish, Pair with Nyloc Nuts (SKU: UBOLT50X7RD) 

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