56mm Square Galvanised Chassis U-Bolt incl Nylocks, and Washers
56mm square galvanised u-bolt includes nylocks and washers. The 56mm u-bolt secures mudguard and spring brackets on galvanised boat trailers.
U-bolts have rolled 1/2 inch threads and include galvanised flat washer and galvanised nylock. The thread length is 60mm.
56mm square u-bolts are available in various lengths to suit multiple chassis rail thicknesses.
U-bolts must be re-tighten approx 300 km after installation due to steel's ability to stretch a little under load.
Once you have re-tightened your u-bolts the final time, you should never have to recheck them. Once the mild steel stretches the first time, you should expect the final tighten to be 1/4 to 1/2 turn.
Break loads exceed 17t for 1/2 inch galvanised u bolts.
U-bolts are de-rated to 375kg each or 1.5t per set of 4 or enough u-bolts to suit a single axle.
The max rating of 60mm Round axles is 3t with a u-bolt rating @ 1.5t.
Furthermore, we tested these u bolts during manufacture and batch tests until destruction.
Destruction loads exceed 17,000kg for 1/2 inch galvanised u bolts.
The max rating of 750kg axles is 750kg with ubolt rating @ 1500kg.
Further, vibration fatigue can loosen u-bolts if not re-tightened after 300 km.
Purchase from our full list of u-bolts
- 39mm Round Galvanised U-Bolt Incl Gal Nylocks
- 40mm Square Galvanised U Bolt
- 45mm Round Galvanised U-Bolt
- 45mm Square Galvanised U-Bolt
- 50mm Round Galvanised U-Bolt
- 50mm Square Galvanised U Bolt
- 63mm Square Galvanised U-Bolt
- 65mm Round Galvanised U-Bolt
- 75mm Round Galvanised U-Bolt
- 80mm Square Galvanised Chassis U-Bolt
- 100mm Galvanised U Bolts