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Keeping the axle tight against the leaf spring is what keeps your suspension stable. This U-bolt plate locks a 2-3/8" diameter axle to a 1-3/4" wide spring, giving the setup a firm, reliable clamp point. It uses (2) 1/2" diameter U-bolts (sold separately) for a solid grip that holds alignment and helps your trailer track straight.
This plate is formed from strong steel and drilled with 9/16" holes to match 1/2" U-bolts. At 5-7/8" long and 3-3/4" wide overall, with 2-15/16" and 2-5/16" center-to-center spacing, it’s sized right for dependable clamping pressure. The sturdy hardware keeps weight evenly distributed across the springs, so the axle stays planted even when the load shifts.
Saltwater, rain, and road grime can eat through regular steel fast. This plate is hot-dipped in zinc after forming, building up a 3-mil to 5-mil coating that seals out moisture. The thick galvanized layer means it won’t rust or corrode easily, making it ideal for boat or snowmobile trailers that see wet conditions.
The hole layout and plate size are designed for easy alignment with standard 1/2" U-bolts. Once everything’s tightened down, the connection feels solid and stays that way. It’s a simple piece of hardware that does its job right—keeping your axle secure and your suspension working the way it should.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at the CE Smith U-bolt plate for trailer suspension systems. The U-bolt plate's going to help secure at 2-3/8 inch diameter axle to a 1-3/4 inch wide leaf spring. We can tell that it's designed for a 1-1/4 inch wide leaf spring by taking a measurement between these 2 holes, closest point to closest point. That's going to give us that 1-3/4 inch measurement. This does require 2, 1/2 inch diameter U-bolts. Those are going to be sold separately.
If you're in need of those, you can find them here at etrailer.com. The 4 outer holes on the unit are designed to accept 1/2 inch diameter bolts. The unit's made from a galvanized steel construction, very strong and durable, as well as corrosion resistant, so it's going to be great for use on boat trailers or any application that's exposed to moisture. The product's made in the USA. The diameter of the hole here in the center is around 5/8 of an inch.
A few measurements to go over with you real quick, starting with the overall length. Measuring from edge to edge, we're looking at about 5-7/8 of an inch. The distance that we have between these 2 holes, center on center, that's going to measure 2-15/16 of an inch. We'll take a measurement of the overall width from outer edge to outer edge. We're looking at a measurement of 3-3/4 of an inch and then the distance between these 2 holes center on center is going to be 2-5/16 of an inch. That's going to do it for today's look at the CE Smith U-bolt plate for trailer suspension systems..
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews

Heather A.
4/11/2026
Thank you for the kind words! Your setup looks great. What kind of trailer are you building?

Joel
3/16/2025
Still working just fine.


Brad G.
8/16/2021
Great!
Info for this part was:
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Rick B.
6/27/2022
Still perfect!