Suspension fastener torque values are critical for ensuring that the suspension components of a trailer are securely attached and function properly, providing stability and safety during towing. Each suspension part, such as leaf springs, axles, shackles, and brackets, has its own specific torque requirements. Over-tightening or under-tightening these fasteners can lead to premature wear, component failure, or reduced safety.
Torque (Ft. Lbs.)
|
Item |
Min |
Max |
| 3/8" U-Bolt | 30 | 50 |
| 7/16" U-Bolt | 45 | 70 |
| 1/2" U-Bolt | 70 | 80 |
| 1/2" U-Bolt/Hex Nut | 45 | 70 |
| 1/2" Flange Nut | 70 | 80 |
| 9/16" U-Bolt | 65 | 95 |
| 5/8" U-Bolt | 100 | 120 |