Bulldog 500224 Trailer Jack Bearing Replacement Part Universal Fit - 7000 lbs Subtotal: $51.00
Manutec 50x125mm Long Square Axle U-Bolts Zinc Plated 1/2″ with Nyloc Nuts – Pair (SKU: UBOLT50X4.5SQ)
$10.00
Zinc-plated 50mm square U-bolts from Manutec. 125mm leg length, 1/2″ thread with nyloc nuts. Ideal for securing 2–3 leaf spring setups on 50mm square axles.
Out of stock
ITEM SPECIFICS
Manutec 50mm Square U-Bolts – Zinc Finish, 125mm Long with Nyloc Nuts (UBOLT50X4.5SQ)
These square U-bolts from Manutec are designed to fit 50mm square trailer axles, providing a secure and rust-resistant fastening solution. With 125mm arm length and a 1/2″ diameter, they are ideal for trailers using 2–3 leaf spring setups. Sold as a pair, these U-bolts come complete with nyloc nuts for added vibration resistance.
Key Features:
- Perfect Fit: Designed for 50mm square axle tubes
- 125mm Arm Length: Suits standard and slightly oversized spring setups
- 45mm Thread Length: Provides ample grip for brackets and saddles
- 1/2″ Bolt Diameter: Strong enough for most light to medium-duty trailers
- Zinc Plated Finish: Rust and corrosion resistant in dry and mild environments
- Includes: Nyloc nuts to prevent loosening from vibration
- Sold As: 2 x U-Bolts per pack
Specifications:
- SKU: UBOLT50X4.5SQ
- Shape: Square U-bolt
- Axle Fitment: 50mm square
- Arm Length: 125mm
- Thread Length: 45mm
- Bolt Diameter: 1/2 inch (12.7mm)
- Finish: Zinc plated
- Hardware: Nyloc nuts included
Whether you’re maintaining a single axle box trailer or assembling a brand-new build, these U-bolts from Manutec offer dependable performance with easy installation.
faq
FAQ
- Q: Will these fit a 45mm axle?
A: No, these are specifically sized for 50mm square axles. Use narrower U-bolts for 45mm axles. - Q: Are the nuts included?
A: Yes, nyloc nuts are included for added anti-vibration security. - Q: Is this U-bolt zinc or galvanised?
A: These are zinc-plated. For marine use, we recommend galvanised U-bolts. - Q: Can I use this for 3-leaf spring setups?
A: Yes, these are ideal for 2–3 leaf spring configurations with 50mm axles.
Additional information
| Weight | 0.2 kg |
|---|---|
| Dimensions | 10 × 10 × 10 cm |
| Location | C -6-1 |
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Guide-Recommendation
Evaluation & Recommendation
This product is ideal for:
- Trailer owners using 50mm square axles
- Securing 2–3 leaf spring suspension setups
- DIY trailer builders needing a reliable and economical fastener
May not suit:
- Marine trailers – zinc is less resistant than galvanised in saltwater conditions
- Heavy-duty or tandem trailers – consider thicker 5/8” U-bolts instead
Installation Advice:
- Use flat washers for even clamping force
- Torque nuts evenly to prevent spring misalignment
- Apply rust inhibitor if operating in wet or coastal regions
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