MANUTEC Trailer Round U-Bolt 52x175mm Long – Zinc Finish, Pair with Nyloc Nuts (SKU: UBOLT50X7RD)
$10.00
MANUTEC round U-bolt pair, 52mm wide and 175mm long arms. Designed for 50mm round trailer axles. Zinc-coated and includes nyloc nuts for secure fit.
In stock
MANUTEC 52mm Round U-Bolt Pair – Long Arm, Zinc Finish, with Nyloc Nuts
Secure your trailer axle setup with confidence using this pair of MANUTEC U-bolts, crafted to suit 50mm round axles. With a 52mm internal width and extended 175mm legs, this hardware ensures a firm and long-reaching grip for trailers under tough towing conditions.
Product Highlights:
- Designed for Round Axles: Ideal for securing 50mm diameter round axle tubes with a snug 52mm internal width.
- Long Arm for Deep Mounting: 175mm leg length offers extended engagement for thicker spring stacks or bracket systems.
- Durable Zinc Coating: Anti-corrosion finish protects in outdoor and road-use environments, extending product lifespan.
- Nyloc Nuts Included: Each bolt comes with nyloc nuts to resist vibration and ensure long-term clamping pressure.
- Sold as a Pair: Convenient twin pack ensures even, balanced installation on both sides of the axle.
This round U-bolt set is commonly used in boat trailers, agricultural trailers, and general utility trailers where axle springs require firm mounting over pipe-shaped axle housings. The 175mm leg length ensures secure reach even for double-leaf or heavy spring systems.
Specifications:
- Internal Width: 52mm
- Arm Length: 175mm
- Threaded Section: 50mm
- Rod Shape: Round
- Finish: Zinc-Plated
- Includes: Nyloc Nuts
- Sold: As a Pair (2 pcs)
Related
Frequently Asked Questions
Q: Will this fit my 50mm round axle?
A: Yes, with 52mm internal width, it is perfectly suited for 50mm diameter round axles.
Q: Is this sold as one piece or a set?
A: It is sold as a pair—2 U-bolts included per pack.
Q: Does it include nuts and washers?
A: Yes, nyloc nuts are included to ensure a secure and vibration-resistant fit.
Q: Can this be used in marine environments?
A: It has a zinc finish that offers good corrosion resistance for general outdoor and light marine use. For full saltwater exposure, consider a stainless steel option.
| Weight | 0.4 kg |
|---|---|
| Dimensions | 18 × 7 × 5 cm |
| Location | C -3-4 |
| Featured Refinements | |
| Manufacturer Part Number | |
| Brand | |
| Product Type |
Evaluation & Recommendation
This MANUTEC round U-bolt pair is highly recommended for users needing to secure round 50mm trailer axles in high-load or long-term use scenarios. With 175mm arms, they are suitable for thicker bracket assemblies or leaf spring stacks, offering better reach and clamp stability.
Need help confirming fitment or planning a full suspension upgrade? Contact us with your specs and we’ll guide you to the right products.
Installation Tips:
- Measure axle diameter and spring bracket thickness to confirm fit.
- Install both bolts as a pair for even clamping.
- Use washers and tighten both sides incrementally for best results.

1x ARK Trailer 10" Oval Electric Brake Magnet EBPMAG UB
Trojan Trailer Marine Bearing Oil Seal 65mm Outer 45mm Inner PT10141 

0415343379