iBroPrat 2 3/8 Inch Trailer Axle U Bolt Kit for 3500lbs

iBroPrat 2 3/8" Trailer Axle U-bolt kit is a complete, galvanized hardware set designed to secure 2-3/8" round axles to 1-3/4" leaf springs on 3,500 lb trailers.

This kit collects the critical components you need to fasten a 2 3/8" round trailer axle to standard 1 3/4" leaf spring packs. It includes four heavy-duty U-bolts, two thick tie plates, and a full complement of nuts and washers engineered to resist corrosion and vibration. The galvanized finish and included lock hardware make it suitable for freshwater and light saltwater exposure, and the thread length is sized to allow firm clamping without thread runout.

How does this kit fit a 3,500 lb trailer axle?

The U-bolts are bent to match a 2 3/8" round axle and sized for trailers rated around 3,500 lbs. Tie plates are cut to clamp 1 3/4" leaf spring stacks securely under the axle saddle, keeping alignment and load distribution stable. Thread length and nut count are sufficient for typical suspension stack heights.

• Four 2 3/8"-radius U-bolts, 6.3" overall length
• Tie plates sized for 1-3/4" leaf springs
• 1/2"-20 thread with 2.18" usable thread length

What materials and finishes protect against rust and wear?

All steel components are high-strength carbon steel with a zinc-based galvanizing layer to slow oxidization. The U-bolts are 0.46" thick and tie plates 0.2" thick for a balance of toughness and weight. Galvanization gives better seawater resistance than painted alternatives, minimizing flaking and surface rust.

• High-strength carbon steel construction
• Hot-dip or zinc galvanize finish for corrosion resistance
• Thick plate and bolt diameters for long service life

What hardware is included and why it matters?

This set ships as a one-set package with nuts and two washer types to reduce loosening under vibration. Flat washers protect the tie plate finish while split lock washers provide bite to help keep the assembly tight. The combination is a step above basic kits that omit one washer type, improving retention during towing.

• 8 x 1/2"-20 nuts for full fastening redundancy
• 8 flat washers to distribute clamp load
• 8 split lock washers to help prevent loosening

How easy is installation and what should I check?

Installation follows standard U-bolt replacement procedures: raise the axle safely, remove old hardware, slide U-bolts over the axle, position tie plates under the spring pack, and torque nuts evenly. Verify axle alignment, retorque after first few hundred miles, and confirm thread engagement is adequate across all studs.

• Thread length allows full nut engagement when tightened
• Check for even seating of tie plates under springs
• Retorque after initial road use for safety

Who is this for: This iBroPrat kit is aimed at trailer owners, boaters, and DIY mechanics who need a durable, ready-to-install U-bolt assembly for 2 3/8" axles on 3,500 lb-rated trailers. It's a practical replacement kit for routine maintenance or suspension rebuilds where corrosion resistance, correct sizing, and complete hardware are important. Choose this set if you want thicker steel, full fastening hardware, and a galvanized finish for longer service life in mixed freshwater or coastal conditions.