Spring U-Bolt Kit LIBRA Axle Kit Carbon Steel

Description

Product Overview

The LIBRA Spring U‑Bolt Kit is engineered for heavy‑duty trailer applications, specifically 3″ diameter round axles rated between 5,200 lbs and 7,000 lbs. Constructed from high‑grade carbon steel with a stainless‑steel exterior finish, each component offers Grade 8 hardness for superior strength and corrosion resistance. The kit includes four 7″ long U‑bolts (1/2″‑20 thread), two tie plates compatible with 1‑3/4″ or 2″ leaf springs, and eight hex nuts, all finished in a sleek silver color. With a total of 14 pieces, the kit provides everything needed for a secure, long‑lasting axle connection.

Usage

Designed for utility trailers, boat trailers, and light commercial rigs, this kit excels in environments where axle integrity is critical. Whether you are upgrading an existing suspension system or replacing worn hardware, the kit’s right‑hand thread style ensures quick, tool‑free installation. Ideal for DIY mechanics, fleet maintenance teams, and professional installers who demand reliable performance under heavy loads.

Why Choose Us

LIBRA combines decades of automotive fastening expertise with rigorous quality control. Each U‑bolt undergoes heat treatment to achieve Grade 8 hardness, guaranteeing resistance to stretching and fatigue. The stainless‑steel exterior protects against rust in harsh weather, extending service life. Our kits are backed by a 4.6‑star rating from over 1,600 verified customers, reflecting consistent satisfaction and dependable performance.

Key Features

• Carbon steel construction with stainless‑steel exterior for maximum durability
• Four 7″ U‑bolts with 1/2″‑20 right‑hand threads for secure axle attachment
• Includes two tie plates compatible with 1‑3/4″ or 2″ leaf springs
• Eight high‑strength hex nuts complete the 14‑piece kit
• Grade 8 hardness and corrosion‑resistant finish meet automotive replacement standards

FAQ

What axle sizes does this kit fit?

The kit is designed for 3‑inch diameter round trailer axles with a load capacity of 5,200‑7,000 lbs.

Can I use this kit on leaf‑spring suspensions?

Yes, the included tie plates are sized for 1‑3/4″ or 2″ leaf springs, providing a solid mounting point for the U‑bolts.

Is the kit compatible with both left‑hand and right‑hand threads?

The U‑bolts feature a standard right‑hand 1/2″‑20 thread, which is the most common specification for trailer axles.

How many pieces are in the kit?

The complete kit contains 14 pieces: four U‑bolts, two tie plates, and eight hex nuts.

What warranty does LIBRA offer?

LIBRA provides a limited one‑year warranty covering material defects, ensuring peace of mind for your purchase.