Center Bolt Kit 1-1/8"-7 x 6" – 10K HD / 12K / 15K Trailer Equalizer
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.
R&P Knowledge Hub
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.
Features
- Center bolt kit for heavy-duty trailer equalizers
- Fits many 10K HD, 12K, and 15K axle suspension systems
- Fine-thread 1-1/8"-7 heavy suspension bolt
- Standard dry bolt design (non-greaseable)
- Includes matching lock nut
Specifications
| 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.
