39mm Round Galvanised U-Bolt

$9.00 - $11.00

SKU: U39RGH Categories: , Tags: ,
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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

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 200lkms 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.

Purchase from our complete list of U-bolts

Galvanised u-bolt clamp kits are listed below

Additional information

Weight0.5 kg
Dimensions10 × 6 × 1 cm
Select U-Bolt Length

100mm, 112mm, 125mm, 137mm, 150mm


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