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8000 lb 9/16″ Trailer U-bolt kit for 3.5″ Tube Trailer Axles

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Estimated delivery dates: Apr 6, 2025 - Apr 8, 2025

$32.99 $89.99 63% OFF

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9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles
8000 lb 9/16" Trailer U-bolt kit for 3.5" Tube Trailer Axles
$32.99 $89.99 63% OFF

Trailer Axles FAQ

Downloadable Files

Files that will help teach you or guide you in finding the measurements for your Trailer Axles. 

Trailer Axle Measurement Guide – TowParts.com

When working with trailer axles, a few key measurements are essential to ensure proper fitment and performance. Accurate measurements are crucial to avoid unnecessary wear, damage, or safety issues. Below, we’ll explain how to measure your axle with confidence.

Getting Started

To make the process easier, it’s best to remove your tires and wheels before taking measurements. This allows for more precise readings. If removing them isn’t possible, you can measure from the center of one tire to the center of the opposite tire. Having a friend assist by holding one end of the tape measure is helpful but not absolutely necessary.

Hub Face Measurement

What is it?

The hub face measurement is the distance from the outer face of one hub (where the wheel mounts) to the outer face of the opposite hub. This is the most important measurement when replacing or upgrading an axle.

How to measure:

1.Hook your tape measure to the outer face of one hub (the side facing the wheel).

2.Extend the tape measure across the axle to the outer face of the hub on the opposite side.

3.Be careful not to measure to the inside face of the hub—measure only to the outer face for accuracy.

Spring Center Measurement

What is it?

The spring center measurement is the distance between the centers of the leaf springs. This measurement is critical for proper axle placement and load distribution. If the springs are installed incorrectly, it can lead to bent axles and unsafe towing conditions.

How to measure:

1.Have a friend hold one end of the tape measure at the exact center of one spring.

2.Stretch the tape measure to the exact center of the opposite spring.

3.If you’re working alone, hook the tape measure on the outside edge of one spring and measure to the inside edge of the opposite spring. Subtract the width of the spring to determine the center-to-center distance.

Tips for Accurate Measurements

•Always double-check your measurements before ordering or installing a new axle.

•If you’re unsure or need help, reach out to our experts at TowParts.com for guidance.

•Use a high-quality tape measure with clear markings to avoid errors.

Pro Tip: Keep these measurements handy when contacting TowParts.com for axle replacements or upgrades. Our team is happy to assist you with any questions or concerns!

 

Trailer Axle and Hub Selection Guide – TowParts.com

Proper axle positioning and hub selection are essential for building or repairing your trailer. Here’s a detailed guide to help you make the right choices with confidence.

How to Purchase the Correct Trailer Hub or Drum

Selecting the right hub or drum is a critical step in repairing your trailer axle. Follow these simple steps to ensure you get the correct fit:

Step 1: Remove the Hub or Drum

Carefully remove the hub or drum from your trailer axle. This will allow you to measure and inspect the components for identification.

Step 2: Measure the Bolt Pattern

Determine your axle’s capacity by measuring the bolt pattern. This step is crucial if the capacity is unknown. Use a bolt pattern diagram to identify the correct measurements.

Helpful Tip: A 5-lug bolt pattern can sometimes be tricky. Use our bolt pattern guide for accurate results.

Step 3: Identify the Bearings and Seal

1.Remove the front and rear bearings and the seal from the hub.

2.Look for numbers stamped on the bearings. These numbers correspond to the spindle size.

3.If the numbers are not readable, measure the inside dimensions of the bearings and seal using calipers.

4.Refer to our bearing measurement guide for step-by-step instructions.

Step 4: Select the Best Hub or Drum for Your Needs

Once you have the measurements and information, choose the hub or drum that fits your requirements.

Need Help?

If you’re unsure, the TowParts.com team is here to assist! We’ll guide you through selecting the correct hub or drum to ensure a perfect fit for your trailer.

Why Choose TowParts.com?

Expert Assistance: Our knowledgeable team is ready to help with your trailer needs.

High-Quality Products: We offer durable, reliable parts built to last.

Comprehensive Resources: Explore our website for diagrams, measurement guides, and installation tips.

For more information, contact us at 1 (888) HAUL 360 or visit TowParts.com. Let us help you get back on the road safely and efficiently!

Description

Ensure your trailer’s suspension system is secure and reliable with the AxleTek 9/16” Trailer U-Bolt Kit for 3.5” Tube 8000 lb Axles. Specifically designed for 8,000 lb axles, this comprehensive kit provides all the essential components needed to mount your leaf springs (sold separately) to a 3.5” round trailer axle.

Key Features:

  • Complete Kit Includes:
    • (4) 8” Long U-Bolts:
      • Length (L): 8”
      • Width (A): 3-1/2”
      • Diameter (D): 9/16”
    • (2) U-Bolt Plates:
      • Designed for 2” wide springs
    • (8) 9/16”-18 Hex Nuts:
      • For secure fastening
  • High Compatibility:
    • Ideal for trailers with 8,000 lb axles
    • Suitable for a wide range of heavy-duty trailer applications
  • Durable Construction:
    • Made from high-quality materials to ensure strength and longevity under heavy loads
    • Zinc-coated for corrosion resistance and extended lifespan
  • Easy Installation:
    • All necessary hardware included for a straightforward installation process
    • Perfect for both new builds and repairs of existing trailers

Specifications:

  • U-Bolts:
    • Length (L): 8”
    • Width (A): 3-1/2”
    • Diameter (D): 9/16”
  • Hex Nuts:
    • 9/16”-18 thread size
  • U-Bolt Plates:
    • Compatible with 2” wide springs
  • Axle Capacity:
    • Suitable for 8,000 lb axles

Important Notes:

  • Spring Seats Required:
    • Spring seats are necessary for mounting the axle to your leaf springs and are sold separately
  • Comprehensive Solution:
    • This kit includes everything needed to mount your trailer’s leaf springs to a 3.5” round axle

Upgrade your trailer’s suspension with this reliable U-bolt kit from AxleTek. With high-quality components designed for durability and ease of installation, this kit ensures your trailer is equipped for safe and dependable towing. Whether you’re building a new trailer or refurbishing an existing one, this kit offers the quality and reliability you need for a smoother and safer hauling experience.

Additional information

Weight 8 lbs
Dimensions 8 × 6 × 4 in

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Additional information

Weight 8 lbs
Dimensions 8 × 6 × 4 in

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