Ussuray Trailer U‑Bolt Kit for 3" Round Axles — 7" Long 1/2" Diameter, fits 5200–7000 lb trailers, complete hardware

Ussuray's New Trailer U‑Bolt Kit secures 3" round axles for 5200–7000 lb trailers with 7" long, 1/2" diameter, 3" wide U‑bolts and all mounting hardware included.

This complete U‑bolt assembly replaces worn or broken axle clamps on 3" round trailer axles. The kit contains four 7" long, 1/2" diameter U‑bolts, matching hex nuts, and two tie plates engineered to fit 1‑3/4" leaf springs. Each component is fabricated from durable steel and sized to match original equipment so you get a precise, secure fit without additional modification.

How will this U‑bolt kit fit my trailer axle?

The Ussuray kit is made specifically for 3" round axles commonly found on trailers rated 5200–7000 pounds. The 3" width across the U‑bolt matches the axle beam diameter and the 7" leg length provides proper reach around the leaf spring and axle assembly.

• Fits round axles with a 3" diameter.
• Designed for trailers with gross capacities between 5200 and 7000 lb.
• Includes 7" leg length to clear springs and mounting plates.

What hardware comes in the kit and is it complete?

The package contains everything needed to replace the axle clamps: four U‑bolts, eight 1/2"‑20 hex nuts and two tie plates sized for 1‑3/4" leaf springs. Nuts and bolts are matched to ensure proper thread engagement and a snug assembly without mixing parts from different sources.

• 4 x 7" long U‑bolts, 1/2" diameter.
• 8 x 1/2"‑20 hex nuts for secure clamping.
• 2 x tie plates compatible with 1‑3/4" leaf springs.

How easy is installation and what tools do I need?

Installation is straightforward and replaces existing U‑bolts directly — no custom fabrication required. Standard hand tools such as a wrench or socket for 1/2"‑20 nuts are all that’s needed, and most users can complete the swap in minutes per U‑bolt pair.

• Direct replacement for broken or worn U‑bolts — no drilling or welding.
• Requires common hand tools (wrench or socket set compatible with 1/2" nuts).
• Simple step: remove old U‑bolts, position plate and new U‑bolts, tighten nuts to secure.

What are the materials and durability expectations?

All components are made from robust steel engineered to match original equipment geometry, ensuring consistent fit and reliable clamping force under trailer loads. While not a corrosion‑proof coating claim, the construction is intended for heavy‑duty trailer service and aligns with OEM fitment standards.

• Steel U‑bolts and tie plates built to OEM dimensions.
• Matched nuts and bolts for consistent thread engagement and less play.
• Designed for long‑term service on load ratings of 5200–7000 lb when properly installed and maintained.

Who is this for: This Ussuray Trailer U‑Bolt Kit is aimed at trailer owners, fleet managers, and DIY mechanics who need a reliable, ready‑to‑install axle clamp solution for 3" round axles commonly used on medium‑capacity trailers. If you have a 5200–7000 lb trailer with 3" axles and 1‑3/4" leaf springs, this kit gives you matched hardware to restore secure axle attachment quickly and affordably. For questions or fitment help, Ussuray customer support is available to assist.