Does the 9-16" U-Bolt Kit Require Lock Washers?
Updated 12/02/2025 | Published 10/31/2025
Question:
I just received part APUBR, does this require lock washers?
asked by: Hines J
0
Expert Reply:
No, they do not require lock washers. The torque specs for the 9/16" diameter U-bolts item # APUBR-9 is 65-95 ft lbs. With that amount of torque on the nuts they would not back off.
What kind of trailer do you have?
expert reply by:
Jerred H
0
U-Bolt Kit
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(click to enlarge)
Product Page this Question was Asked From
U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7-1/16" Long U-Bolts
- Trailer Suspension Parts
- U-Bolt Kits
- Camper
- Car Hauler
- Utility Trailer
- 5200 lbs - 7000 lbs
- Round Axle - 3 Inch
- 9/16 Inch Diameter
- 7-1/16 Inch Long
- Redline
more information >
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Jerred H.
12/1/2025
Hey, how did the U-bolt kit work out on your trailer? Did the torque specs keep everything tight without needing lock washers? Your update could make it easier for the next person using the same setup.