Replacement Trailer Spindle Jam Nut

Replacement Trailer Spindle Jam Nut

Item # 6-191

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Replacement Trailer Spindle Jam Nut 1 Inch I.D. 6-191
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Replace a lost or damaged trailer spindle jam nut with this equivalent part. Call 800-298-8924 to order Redline accessories and parts part number 6-191 or order online at Free expert support on all Redline products. Guaranteed Lowest Price and Fastest Shipping for Replacement Trailer Spindle Jam Nut. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (2)
  • Q & A (7)
  • Photos
  • Why etrailer?

Redline Accessories and Parts - 6-191

  • Trailer Spindles
  • Spindle Nut
  • Redline
  • 1 Inch I.D.

Replace a lost or damaged trailer spindle jam nut with this equivalent part.


  • Replacement trailer spindle jam nut
  • Fits 2,000-8,000 lb. axles with E-Z Lube spindles
  • Diameter: 1"-14

6-191 Replacement Trailer Spindle Jam Nut

Customer Reviews

Replacement Trailer Spindle Jam Nut - 6-191

Average Customer Rating:  3.0 out of 5 stars   (2 Customer Reviews)

Replace a lost or damaged trailer spindle jam nut with this equivalent part.

- 6-191

Was an emergency repair for an out-of-state customer. Never heard back, and everything seemed to go well... 467940

- 6-191

Was an emergency repair for an out-of-state customer. Never heard back, and everything seemed to go well... 467939


Ask the Experts about this Redline Accessories and Parts

Do you have a question about this Accessories and Part?

  • Spindle Nut Size For EZ Lube Axles
  • The Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 4-1/2 - Galvanized # AKIHUB-545-35-G-EZ-K does not come with the spindle nut. That would come with your axle. For a 3,500 lb axle you would want the Spindle Nut Kit for EZ Lube Axles # RG05-100. The Nut is a 1 inch nut with 14 threads. The socket or wrench needed for this is 1-1/4 inch. If you just want the nut # 6-191. For the retainer # 6-190.
    view full answer...

  • Replacement Washer for an EZ Lube Trailer Spindle
  • EZ lube spindles generally use a tang washer to prevent the castle nut from turning. There are different sizes available depending on what is needed. For example, # 5-101 has an inner diameter of 1 inch. Washer # 5-71 has a different design and a 1-1/2 inch inner diameter. Washer # 5-59 is similar but larger with a 1-3/4 inch inner diameter. Sometimes you will see a D-shaped opening on an EZ spindle washer such as # 5-23. On this one the distance from the straight edge to the furthest...
    view full answer...

  • Compatibility of the Redline Nut Retainer for the Redine 1 Inch Nut
  • The Replacement Nut Retainer Jam Nut, # 6-190, is designed to fit the 1 inch Trailer spindle nut that fits the 2,000 lbs to 8,000 lbs axles with E-Z Lube spindles. The kit you referenced, # RG05-100, will include the same # 6-190 jam nut retainer and # 6-191 jam nut. The actual thread size on the spindle is 1 inch. The jam nut and the retainer measure 1 inch to fit the 1 inch threads on the spindle.
    view full answer...

  • Available Sizes of Spindle Jam Nuts
  • We offer a couple of spindle jam nuts, part # 6-191 that you referenced which has an inner diameter of 1-inch, and part # 6-96 which has an inner diameter of 1-1/2-inches. We do not offer any with an inner diameter of 1-1/4-inches.
    view full answer...

  • How Tight To Get Spindle Nut on Trailer Axle
  • The nut size of the # 6-191 is 1-1/4 inch in diameter. Typically this is larger than what most people have a standard wrench for but since this nut doesn't get torqued down hard at all we typically just use a crescent wrench. When our installers replace a trailer hub, there isn't a set torque spec used when tightening the spindle nut. The hub is placed on the spindle, making sure the inner and outer bearings are correctly seated. The spindle nut is then run down until you start feeling...
    view full answer...

  • Replacement Spindle Jam Nut for EZ Loader Boat Trailer with Grease Zerk at End of Spindle
  • The thread diameter of spindle jam nut # 6-191 is 1 inch. If you do need a 3/4 inch then this nut will not work, though it is for EZ lube spindles that have the grease zerk at the end. We do not have a 3/4 inch jam nut. The closest match is a 7/8 inch castle nut # 165931. You can double check the measurement by using dial or digital calipers to measure the diameter of the threaded part of the spindle. It if turns out to be 1 inch then you can use # 6-191.
    view full answer...

  • Installation of Electric Brake Replacement Assemblies on Wells Cargo Dual Axle Trailer
  • When installing electric brakes on your Wells Cargo tandem axle trailer, you will want either the Electric Trailer Brake Kit - Self-Adjusting - 12" # AKEBRK-7-SA or the 10" # AKEBRK-35-SA. You can simply put a tape measure on your hub to see which one you need. I've attached videos of the installations to assist. It is just as common for assemblies not to use a cotter pin and it is for them to use a cotter pin on that spindle nut. Some will use a castle nut like # 165686 with the...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Expert Research:
Adam R
Updated by:
Adele M
Written by:
Laura H

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

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