U-Bolt Torque Recommendation for 1/2 inch Diameter On Trailer Suspension
Updated 05/14/2026 | Published 08/10/2016
Question:
Hi, trying to get a torque value for the above U-bolts Thanks
asked by: Nick
1
Helpful Expert Reply:
For 1/2 inch trailer u-bolts that attach to axle the recommended torque value is between 45 and 70 ft lbs of torque.
expert reply by:
Jameson C
1
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Product Page this Question was Asked From
CE Smith Replacement U-Bolt w/ Nuts for 3" Round Axles - 1/2" Diameter - Galvanized
- Trailer Suspension Parts
- U-Bolts
- Boat Trailer
- Snowmobile Trailer
- 5200 lbs - 7000 lbs
- Round Axle - 3 Inch
- 1/2 Inch Diameter
- 6-11/16 Inch Long
- CE Smith
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Brian
5/14/2026
So I just went through this with my 16' car hauler with 3500 lb axles. U bolts were 1/2" and the spec given to me by a trailer shop was 75-90 foot pounds. I went in the middle at around 80-84 and stripped 2 of them. So I agree with the previous statement of 45-70. Brought them back to trailer shop and got them warrantied but they say they don't torque them just put them tight.....ugh!!