The Great Prices are Available. Go Shopping for more Surprises.
0415343379
ARK Heavy Duty Square U-Bolt 50x160mm Long 5/8″ Dia for 50mm Axle & 60mm Spring (SKU: UB5015)
$18.00
5/8″ heavy-duty square U-bolt, 160mm long with 80mm thread length, perfect for securing 50mm square axles and 60mm wide leaf springs. Galvanised finish for corrosion protection.
Out of stock
ARK Heavy Duty Square U-Bolt – 5/8″ Diameter, 160mm Long, 50mm Wide
This ARK heavy-duty square U-bolt is designed specifically for robust trailer suspension applications. Built with a strong 5/8″ (15.8mm) diameter and engineered to secure 50mm square axles to 60mm wide leaf springs, this component offers solid performance and peace of mind.
Key uses include:
- Securing 50mm square trailer axles
- Mounting 60mm wide leaf springs
- Replacement for worn or rusted suspension bolts
- Trailer restoration or custom builds
Its galvanised finish provides excellent corrosion resistance, making it suitable for use on utility trailers, boat trailers, off-road rigs, and other demanding outdoor applications.
Product Specifications:
- Arm Length: 160mm
- Internal Width: 50mm
- Thread Length: 80mm
- Diameter: 5/8″ (approx. 15.8mm)
- Shape: Square
- Suits Axle: 50mm square
- Suits Leaf Spring: 60mm wide
- Finish: Galvanised
Frequently Asked Questions
Q: Will this fit a 50mm square axle?
A: Yes, it is designed to perfectly fit 50mm square axles.
Q: Is the thread length enough for 60mm springs?
A: Yes, with 80mm thread length, it provides ample room to secure 60mm wide leaf springs with lock nuts and plates.
Q: Is it suitable for boat trailers?
A: Absolutely. The galvanised coating makes it ideal for marine or wet environments.
Q: What’s the thread size type?
A: The bolt uses standard imperial 5/8″ threads (UNC).
| Weight | 1.4 kg |
|---|---|
| Dimensions | 19 × 9 × 5 cm |
| Manufacturer Part Number | |
| Brand | |
| Product Type | |
| Featured Refinements |
Evaluation & Recommendation
This U-bolt is well-suited for anyone working on or upgrading a trailer suspension system using 50mm square axles and 60mm leaf springs. Perfect for:
- DIY trailer restorers and custom builders
- Boat trailer owners needing strong anti-corrosion fasteners
- Heavy load carriers requiring reinforced suspension setup
If you need a different width or arm length, feel free to contact us for other options.
Installation Suggestions:
- Place U-bolt over axle and align with spring seat or mounting bracket
- Insert through pre-drilled fish plate holes
- Install flat washers and nyloc nuts (not included unless specified)
- Tighten gradually and evenly for balanced pressure
- Re-torque after first 50–100km of towing
