At a Glance
- >Oversize U-bolt for trailer axles
- >Allows clearance for taller spring packs or lift blocks
- >Constructed from 9/16 inch round rod
- >Includes 9/16 inch fine thread nuts
- Brand: R & P Carriages
- SKU: 175668-KIT
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. |

Oversize trailer axle U-bolt designed for 3500 lb trailer axles when additional clearance is needed for taller leaf spring packs or lift blocks. Includes matching fine thread nuts.
Standard 3500 lb trailer axle U-bolts are typically about 2.5 inches wide. This oversize version measures approximately 2.7 inches inside width and may require modification of the spring tie plate hole spacing.
| Specification | Detail |
| Rod Diameter | 9/16 inch |
| Inside Width | Approximately 2.7 inches |
| Inside Depth | Approximately 7.7 inches |
| Quantity | 1 U-bolt with nuts |
Verify dimensions before installation.

Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
“Got me the axle I needed right away with custom spring perch setting.”
“Had a trailer made to my needs.ken was able to get it done and at a price that was very acceptable.i have bought parts there for 2 other trailers and always in stock”
“Quality work. Staff is polite. Great job welding a project for me. Didn't even want to charge me, so I bought them a case of Corona. They were ecstatic. I ever need a welding or like that R&P Carriages is #1 !!!!!”
Need help matching a part? Send us photos, part numbers and measurements. We can help narrow it down before you order.