Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
Heavy-duty center bolt kit used on many trailer suspension equalizers for 10,000 lb HD, 12,000 lb, and 15,000 lb axle systems. This bolt passes through the equalizer pivot and secures the suspension assembly to the hanger bracket.
Standard dry bolt configuration. This bolt is not greaseable and is intended for suspension systems that do not use wet-bolt lubrication.
The center bolt is the main pivot bolt that connects the equalizer to the center hanger in multi-axle trailer suspension systems. This pivot allows the equalizer to transfer load between axles as the trailer travels over uneven surfaces.
Heavy trailer suspensions commonly use large fine-thread pivot bolts like this 1-1/8"-7 configuration for improved strength and clamping force.
Dry bolts are solid bolts without a grease channel. These are used in standard suspension setups where lubrication is not routed through the bolt.
| Specification | Detail |
| Bolt Diameter | 1-1/8" |
| Thread Pitch | 7 TPI |
| Bolt Length | 6" |
| Application | Trailer Equalizer Pivot Bolt |
| Axle Capacity Range | 10K HD / 12K / 15K Suspension Systems |
| Included Components | 1 Bolt, 1 Lock Nut |
Verify specifications before installation.
