U-Bolts

Square, Semi-Round and Round U-Bolts

U-Bolts

Our U-Bolt division manufactures square, semi-round, and round U-Bolts from 3/8″ diameter bar up to 1-1/2″ diameter. Remember to never re-use U-Bolts. Used U-Bolts have been stretched while under torque, which is what they are designed to do, and will not hold the proper torque if re-used. Instead, re-torque U-Bolts after 500 miles or replace with new U-Bolts.
U-Bolts
How To Order

If you need help finding the right U-Bolt for your needs, contact us. We have a good selection in stock and ready to order.

U-Bolts available:

  • Round Top
  • Semi-Round Top
  • Square Top
  • 3/8″ (.375″) to 1-1/2″ (1.5″) Bar Diameter
  • Cold and Hot Bent
  • Custom Sizes
  • Custom Threading
  • Forged Top
  • 4140 – Heat Treated to Grade 5 and Grade 8
  • Deep Nuts, Nylock Deep Nuts, Washers

U-Bolt Torque Chart
Suggested torque values for U-Bolts with a light oil finish.

SIZE
(Dia x Thread)
Material
Grade
TORQUE
(ft. Lbs)
SIZE
(Dia x Thread)
Meterial
Grade
TORQUE
(ft. Lbs)
3/8 x 24
7/16 x 20
1/2 x 20
9/16 x 18
5/8 x 18
3/4 x 16
7/8 x 14
T5
T5
T5
T5
T5
T5
T5
28 38
44 58
66 84
93 116
129 157
223 264
353 409
5/8 x 18
3/4 x 16
7/8 x 14
1 x 14
1-1/8 x 12
1-1/4 x 12
     
T8
T8
T8
T8
T8
T8
 
161 197
279 330
441 511
665 757
943 1059
1300 1443