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ARK Galvanised U-Bolt for 39mm Round Trailer Axle – 100mm Long with Nyloc Nuts (SKU: AK-UB39G)
$10.00
Heavy-duty 39mm round axle U-bolt from ARK. 100mm long legs, 60mm thread, 1/2″ diameter with galvanised finish and nyloc nuts—perfect for small to mid-size trailers.
In stock
ITEM SPECIFICS
ARK Trailer U-Bolt for 39mm Round Axle – Galvanised Finish with Nyloc Nuts (AK-UB39G)
The ARK AK-UB39G U-Bolt is engineered for round trailer axles, ideal for securing 39mm round axle profiles. Manufactured with 1/2″ diameter galvanised steel, it delivers strength and corrosion resistance in marine and general towing environments.
Key Features:
- Round Axle Fit: Suits round axles up to 39mm (internal width ~42mm)
- Durable 100mm Legs: Allows ample clearance for leaf spring brackets
- 60mm Threaded Section: Long enough for washers, mounting plates, and secure adjustment
- Galvanised Finish: Corrosion-resistant for long life—ideal for marine or outdoor use
- Secure Fitting: Includes nyloc nuts for added vibration resistance
- Easy to Install: Standard 1/2″ diameter bolts suit most trailer suspension setups
Specifications:
- SKU: AK-UB39G
- Axle Type: Round (39mm)
- Internal Width: Approx. 42mm
- Arm Length: 100mm
- Thread Length: 60mm
- Bolt Diameter: 1/2 inch (12.7mm)
- Finish: Hot-Dip Galvanised
- Includes: Nyloc Nuts
Ideal for light to mid-size trailers, ARK’s UB39G offers dependable axle clamping with long-lasting strength—even in the toughest Aussie conditions.
faq
FAQ
- Q: Will this fit a 39mm round axle?
A: Yes, it’s designed for 39mm round axles and has an internal width of approx. 42mm for a snug fit. - Q: Is this bolt square or round shaped?
A: The U-bolt is **round-shaped** to match the curve of round trailer axles. - Q: Can I use this for boat trailers?
A: Absolutely! The galvanised finish makes it corrosion-resistant—perfect for marine use. - Q: Are nyloc nuts included?
A: Yes, nyloc nuts are included to prevent loosening under vibration.
Additional information
| Weight | 0.5 kg |
|---|---|
| Dimensions | 19 × 9 × 5 cm |
| Location | B-X-3 |
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Guide-Recommendation
Evaluation & Recommendation
This U-bolt is great for:
- Light and medium trailers with 39mm round axles
- Boat trailers needing rust-resistant fasteners
- Farm trailers or general-purpose builds
Not ideal for:
- Square axles (check square U-bolt listings instead)
- Axles larger than 39mm or specialty suspension brackets
Installation Tips:
- Fit around axle and align with leaf spring brackets
- Evenly tighten nuts to avoid strain or twist
- Re-check tension after towing the first 50–100km
