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Replacement U-Bolt w/Locknuts for 10,000-lb, Round Trailer Axles - 5/8" Diameter
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Redline

Replacement U-Bolt w/Locknuts for 10,000-lb, Round Trailer Axles - 5/8" Diameter

Part Number: 11-77
In Stock
$34.08
Retail:$35.99
You Save: 5%
Trailer Suspension Parts
Redline Trailer Suspension Parts - 11-77
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
This U-bolt, in conjunction with a U-bolt plate and an additional U-bolt, attaches your round, 10,000-lb axle to your leaf springs. Bolt is 8-7/8" long and has an inner width of 5". Great Prices for the best trailer suspension parts from Redline. Replacement U-Bolt w/Locknuts for 10,000-lb, Round Trailer Axles - 5/8" Diameter part number 11-77 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Redline Trailer Suspension Parts - 11-77

Highlights

  • Handles 10,000-lb Axles: Built for heavy-duty trailer setups that need solid clamping strength.
  • 5/8" Diameter x 8-7/8" Long: Thick, strong bolt holds firm under load without stretching.
  • Fits 5" Round Axles: Matches the common size on 10K-rated axles for a proper fit.
  • Secures Axle to Leaf Springs: Keeps suspension tight to reduce movement and wear.
  • Includes 2 Locknuts: Threads stay tight to maintain secure axle alignment.
  • Torque to 100-120 ft-lbs: Ensures correct clamping pressure for safe, lasting hold.

Features to know about

Solid Clamp for Heavy Axles: 5/8" Diameter Steel U-Bolt Holds Tight

A strong connection between the axle and springs is what keeps a trailer steady. This U-bolt is built from 5/8" diameter steel to lock a 10,000-lb, round axle firmly to the leaf springs. It’s 8-7/8" long with a 5" inner width, giving plenty of reach and bite for a tight, reliable hold that won’t shift under weight or rough roads.

Built for Precision Fit: Matches 5" Round Axles

Keeping alignment right starts with the right dimensions. This U-bolt is designed specifically for 5" diameter, round axles so the fit is solid without forcing or gaps. Used along with a U-bolt plate and a matching bolt (each sold separately), it secures the axle to the springs cleanly and evenly for balanced suspension movement.

Dependable Hardware Included: Two Locknuts Keep It Secure

Every connection point matters when you’re dealing with heavy loads. This setup includes two locknuts that stay tight even through vibration and long hauls. When torqued to the correct 100-120 ft-lbs range, they hold firm so the suspension stays clamped and the axle stays put.

Simple, Strong, and Serviceable: Straightforward Design That Works

There’s no overthinking here—just a heavy-duty U-bolt that does the job right. Paired with its plate and a second matching bolt, it ties the axle and springs into one solid unit. It’s the kind of part you install once and trust to keep your trailer tracking straight mile after mile.

Specs

Dimensions

  • Bolt diameter: 5/8"
  • Length: 8-7/8"
  • Width: 5"

Technical diagram of Redline Replacement U-Bolt with locknuts for 10,000-lb round trailer axles, showing 5/8-inch diameter, 8-7/8-inch length, and 5-inch width measurements.


11-77 U-Bolt for 10,000-lb Round Trailer Axles





Video of Replacement U-Bolt w/Locknuts for 10,000-lb, Round Trailer Axles - 5/8" Diameter
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Hands-On with the Replacement U-Bolt w/Locknuts for 10,000-lb, Round Trailer Axles

Today we're going to be taking a look at part number 11-77. This is the replacement U-bolt for a 10,000 pound round trailer axles. This U-bolt in conjunction with a U-bolt plate and an additional U-bolt that would be the same as this one, you could easily attach your round 10,000 pound axle to your lease strings. This unit is going to figure round trailer axles with a 5-inch diameter. It's going to include two lock nuts and one U-bolt. Now if we take a measurement of the opening here, inside edge to inside edge, that's going to give us a measurement of about five inches. The bolt diameter is going to measure 5/8ths of an inch.

The length that we have, measuring from the bottom of the curve to the end of the threaded portion, it's going to give us a measurement of eight and 7/8ths of an inch. Our studs are going to be separated by five and 3/4ths of an inch on center and if we take a measurement of the threaded portion, just the length of the threads, that's going to give us a measurement of about two and 5/16s of an inch. That's going to do it for our review of part number 11-77.

Customer Satisfaction Score:

Ratings & Reviews

4.7

335 reviews
Review sort icon
This U-bolt, in conjunction with a U-bolt plate and an additional U-bolt, attaches your round, 10,000-lb axle to your leaf springs. Bolt is 8-7/8" long and has an inner width of 5".

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They fit nicely



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is advertised.



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receved product Its what I ordered and looks to be good quality at a fair price



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shipped quickly, fitted as it should

Neilhelen profile picture

Neilhelen

6/29/2020

carried some heavy loads and still good



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All parts were exactly as described and I appreciate the timely delivery.

Richard profile picture

Richard

7/11/2023

Excellent, fit great and work well.



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As expected. Good, strong steel for my utility trailer.



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Sometimes finding a custom size for a non-standard project can be frustrating. Not with Etrailer. A few clicks is all I needed to find the part I required. I'm restoring an old Airstream, and this u-bolt will be holding the center pipe to the floor platform. It's exactly the size and strength I need for the job.


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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B

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