At a Glance
- >(4) U-Bolts – 3" inside width, 7" length, 1/2" diameter
- >(2) 3" U-Bolt Plates
- >(8) 1/2"-20 Hex Nuts
- Brand: R & P Carriages
- SKU: UBK-7000-R
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. |

Part Number: UBK-7000-R
U-bolt mounting kit for common 3" diameter round trailer axles typically used on 5200 lb, 6000 lb, and 7000 lb axle applications. Designed to secure the axle to leaf springs. U-bolts, plates, and nuts included.
| Axle Type | Round |
| Axle Diameter | 3" |
| Typical Axle Capacity | 5200 lb – 7000 lb |
| U-Bolt Length | 7" |
| U-Bolt Diameter | 1/2" |
| Thread Size | 1/2"-20 |
| Spring Width Compatibility | 1-3/4" or 2" |
| Total U-Bolts | 4 |
| Total Nuts | 8 |
U-bolt plate appearance may vary. Verify axle diameter and spring width 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 !!!!!”
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