CE Smith Trailer Axle Square U-Bolt, part 15253
U-Bolts are used to connect and secure the trailer axle to the leaf spring. They are designed to fit around the axle, with the threaded ends inserted the the holes of a tie plate that is placed below the leaf springs.
Sold each. Nuts and Washers are NOT included. (sku #CS10811 and CS10961)
Specifications:
- Zinc Plated to prevent rust
- Rod size: 7/16 inch
- Threading: 14
- Leg span: 3-1/8 inches
- Leg length: 4 inches
- Thread length: 2-1/4 inches
- Shape: Square
- Grade: Grade 5
Measuring U-Bolts:

C. E. Smith Company, Inc. manufactures and sells replacement parts for small to mid-size boat trailers including trailer fenders, boat guides, galvanized bracketry, tire carriers, replacement wheel bearings, rubber rollers, roller shafts, u-bolts and other requirements for boat trailers.

Frequently Asked Questions
What is the Trailer Axle Square U-Bolt used for?
The Trailer Axle Square U-Bolt is used to connect and secure the trailer axle to the leaf spring, fitting around the axle with its threaded ends inserted in the holes of a tie plate placed below the leaf springs.
What are the specifications of the Trailer Axle Square U-Bolt?
It is a square, Grade 5, zinc plated U-bolt with a 7/16 inch rod size, a 3-1/8 inch leg span, a 4 inch leg length, and a 2-1/4 inch thread length.