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ARK Galvanised Square U-Bolt 42x130mm Long 1/2″ Dia for 40mm Axle (SKU: AK-UB40G)
$10.00
1/2″ square U-bolt with 130mm arm length and 42mm internal width, ideal for securing 40mm square axles. Galvanised finish with nyloc nuts included for secure and rust-resistant trailer suspension.
In stock
ARK Galvanised Square U-Bolt – 1/2″ Dia, 130mm Long, Suits 40mm Square Axles
This compact and reliable ARK U-bolt is designed for securing 40mm square trailer axles with ease. With a sturdy 1/2″ (12.7mm) diameter and 42mm internal width, it offers a precise fit, while the 130mm arm length and 60mm thread provide enough clamping depth for typical trailer suspension setups.
Whether you’re repairing, replacing or fabricating trailer components, this U-bolt ensures a secure hold with anti-corrosion galvanised protection. It also comes with nyloc nuts for added vibration resistance and long-term durability.
Common Uses:
- Securing 40mm square trailer axles
- Mounting leaf spring brackets or plates
- Trailer suspension repairs or upgrades
- General purpose fastening on light-duty trailers
Specifications:
- Internal Width: 42mm
- Arm Length: 130mm
- Thread Length: 60mm
- Diameter: 1/2″ (12.7mm)
- Shape: Square
- Material: Steel
- Finish: Galvanised
- Nuts: Nyloc nuts included
Frequently Asked Questions
Q: Will this fit a 40mm square axle?
A: Yes, it is specifically designed for 40mm square trailer axles.
Q: Does it come with nuts?
A: Yes, nyloc nuts are included for added security against vibration.
Q: Is the finish weather-resistant?
A: Yes, the galvanised finish offers strong protection against rust and weather exposure.
Q: Can I use it for marine trailers?
A: Absolutely, the galvanised coating makes it suitable for marine or wet conditions.
| Weight | 0.5 kg |
|---|---|
| Dimensions | 19 × 9 × 5 cm |
| Location | B-X-3 |
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Evaluation & Recommendation
This U-bolt is best suited for light- to medium-duty trailers using 40mm square axles. It’s a solid option for:
- Light utility trailers
- Box trailers and small campers
- Repairing or replacing corroded suspension bolts
- DIY trailer builders needing compact, secure fasteners
If your trailer uses a larger axle (50mm or above), consider stepping up to a wider U-bolt. Contact us if you’re unsure—we’re happy to help you find the perfect fit.
Installation Steps:
- Position U-bolt over axle and align with mounting bracket or spring plate
- Insert through plate holes and add nyloc nuts
- Tighten evenly to ensure proper clamp force
- Double-check tightness after initial use
