80mm Square Galvanised Chassis U Bolt incl Nylocks

$11.00 inc GST

or 4 fortnightly payments of $2.75 with Afterpay More info

SKU: U80S120GH Category:


80mm Square Galvanised U Bolt | Nylocks | Washer

80mm Square Galvanised  U-Bolt made by Couplemate. We manufacture it own galvanised U-bolts. U-bolts can be supplied bulk with nuts and washers on the threads in boxes of 50.

Rolled threads with gal flat washer + gal nylock. Thread length is 60mm.

How do I calculate the correct length, measure

  • Spring width plus
  • Axle Pad 8mm plus
  • Axle width plus
  • Nylock plus
  • 5mm thread through nylock

Example, 3 leaf slipper on 39mm Round axle is

18mm Spring + 8mm Axle spacer + 39mm axle + Nylock 15mm + 5mm

Total U-bolt minimum length = 120mm

How to Measure U-bolts (example)

Replacement U Bolt Kit for Jockey Wheel (U3S3)

It is important you retighten U bolts approx 200lkms after installation due to steels ability to stretch a little under load.

U bolts are a major cause of caravan wheel alignment problems.

U bolts generally fail due to hydrogen embrittlement. Hydrogen embrittlement occurs during bending and galvanising. At Couplemate we have an extra process that removes hydrogen embrittlement to produce st class u bolts.

We stress tested these u bolts during manufacture and batch test until destruction.

Destruction loads exceed 17,000kg for 1/2 inch galvanised u bolts.

Our ubolts are derated to 375kg each or 1500kg per set of 4 or enough ubolts to suit a single axle.

The max rating of 60mm Round axles is 3000kg with ubolt rating @ 1500kg.

More u bolts can be found here.

Galvanised u bolt clamp lits are listed below

Couplemate Trailer Parts sells only the best quality 80mm Square Galvanised Chassis U Bolt incl Nylocks and caravan spare parts throughout Australia.

Customers are welcome to either pickup or take advantage of our low freight rates. Express shipping to Melbourne, Sydney, Brisbane, Perth, Adelaide, Darwin, and Hobart.

We also ship products to New Zealand via Australia Post Air Express.

© Steve Wotherspoon April 21, 2017. Images and text may be copied, provided a link back to the copied page and the source is displayed where the content or image is located.

Additional information

Weight0.5 kg
Dimensions10 × 6 × 2 cm


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