Trailer U-Bolt Kit - 3-1/2" Round Axle - 9/16" Diameter - 7-3/4" - Raw Finish - 4200

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Round trailer U-bolt kit part number 4200.


  • A - Thread Diameter: 9/16"
  • B - Axle Tube Size: 3-1/2" Round
  • C - Inside Length: 7-3/4"
  • Spring Width: 2"
  • U-Bolt Finish: Raw
  • Application: 8,000 lb. Axle


Trailer U-Bolts for round axles, our 4200 U-Bolts are available for any trailer spring or axle application. If your U-Bolt is not listed we can make you a set. U-bolts are designed to stretch when installing to aid in torque retention. Upon removal they retain the stretch, therefore we recommend you do not reuse old U-Bolts.

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