39mm Round Galvanised U-Bolts
$9.00 – $11.00
U-bolt available from 75mm to 200mm lengths. Add roughly 13mm to your length for the spacer plate and nut/washer.
✓ Galvanised U-bracket with 60mm thread length.
✓ Includes 2 x Galvanised Nyloc nuts (1/2″ BSW).
✓ Also available in a U-bolt clamp kit.
All dimensions (length, width) are the internal U-Bolt measurements.
Shipping
39mm Round Galvanised U-Bolt Incl Gal Nylocks
39mm round galvanised U-bolts by Couplemate are also known as 40mm round u bolts.
Rolled threads with gal flat washer and galvanised nylocks. The thread length is 60mm.
How do I calculate the correct size? Measure
- Spring width plus
- Axle Pad 8mm plus
- Axle width plus
- Nylock plus
Ensure the thread passes through the nylon in the nut. The captive nylon insert is the key to locking a Nylock nut onto a thread.
Removing the Nylock nut weakens the nylon insert upon reuse.
39mm Round U-Bolts Fit the following Axles
- 39mm Round Axle
- 39mm Round Axle – Galvanised
- 39mm Round Unbraked Lazy Axle
- 39mm Round Galvanised Lazy Axle
How to Measure U-bolts
Measure U-bolts from the inside of the U-bolt to the tip of the thread.
Retightening U-bolts approximately 200 hours after installation would be best due to the steel’s ability to stretch a little under load.
Furthermore, we stress-tested u-bolts during manufacture and batch test until destruction.
Destruction loads exceed 17,000kg for 1/2-inch galvanised U-bolts.
Finally, U-bolts are derated to 375kg each or 1500kg per set of 4 or enough U-bolts to suit a single axle.
The max rating of 750kg axles is 750kg with a U-bolt rating of 1500kg.
The humble U-bolt is a significant cause of caravan accidents.
Read how U-bolts cause accidents here.
Bare Galvanised U-Bolts with Nylocks and Washers
- 39mm Round Galvanised U-Bolts
- 40mm Square Galvanised U-Bolt
- 45mm Round Galvanised U-Bolt
- 45mm Square Galvanised U-Bolts
- 50mm Round Galvanised U-Bolts
- 50mm Square Galvanised U-Bolts
- 56mm Square Galvanised Chassis U-Bolt
- 65mm Round Galvanised U-Bolts
- 65mm Square Galvanised U-Bolt (165mm)
- 75mm Round Galvanised U-Bolts
- 75mm Square Galvanised U-Bolts
- 80mm Square Galvansied U-Bolt (120mm)
- 100mm Square Galvanised U-Bolts
- 125mm Square Galvanised U-Bolt (100mm)
Galvanised U-bolt clamp kits are listed below
Additional information
| Weight | 0.5 kg |
|---|---|
| Dimensions | 10 × 6 × 1 cm |
| Bolt Diameter | 12.7mm |
| Coating | Galvanised |
| Fastener Type | U-Bolt |
| U-Bolt Width | 39mm |
| U-Bolt Length | 100mm, 115mm, 125mm, 140mm, 150mm |
| Stud Thread | 1/2" BSW |
Our Service Lifetime Warranty
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.
Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.
Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.
60-Day Returns
After 60 years of experience, we know that life has its unpredictable moments.
All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.
You can view our full policy for change-of-mind returns here.
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