Round U-bolts (6)
Square U-bolts (9)
Heavy Duty U-bolts (1)
U Bolt Kit (1)
U-bolt Clamp Kit (6)
Heavy Duty Galvanised U-Bolt Kit (1)
Couplemate U bolts (galvanised) provide a higher degree of strength; it has galvanised nylock nuts that are less prone to breakage than their conventional counterparts.
Reconsidering your next trip into the outback?
Just call Couplemate, and we’ll deliver all kinds of spare trailer parts, galvanised equipment, and trailer couplings anywhere in Australia.
Some Further Info On Our U-Bolts
Galvanised U-bolt de-stressing is an additional process—that happens after galvanising—to remove the stresses from the manufacturer. These U-bolts are then batch tested to destruction.
Why are our tested so intense, you ask?
The answer is that weak points are created when steel is bent. If this pressure is not removed, shock loading from bad roads can cause stress fractures and breakages.
These humble connections on your caravan can cause you unbelievable grief.
At Couplemate, we decided a long time ago to manufacture our own bolts when reputable products kept breaking.
A standard square galvanised U-bolt broke due to a stress fracture on the bend. Immediately, we realised that Couplemate needed to make a better Caravan U bolt.
We designed a U bolt that had the thread rolled—as opposed to cut. Then, we made the length of the thread 60mm—instead of the standard 50mm—because we were always running out of thread when tightening the nuts.
Finally, we decided that galvanised nylock nuts were the better way to lock U bolts into position, rather than the two locking nuts and a spring washer that always seemed to rust.
Note: When replacing U bolts, make sure you also replace your old nylock nuts. These are a one-use-only nut.
1/2 inch U-bolts: breaking capacity is 17,000kg—we recommend use on axles rated up to 1500kg
5/8 inch U-bolts: breaking capacity is 23,000kg—we recommend use on axles rated up to 2500kg
u bolt Clamp kits are also available for 50mm, 56mm and 80mm clamping.
Couplemate sells only the best quality trailer and caravan spares throughout Australia—covering the Northern Territory, Western Australia, South Australia, Victoria, New South Wales, and Queensland. We also ship products via Australia Post Air to New Zealand.