bing tracking image
  1. Accessories and Parts
  2. Redline
  3. Trailer Spindles
  4. Spindle Nut Retainer
  5. 1 Inch I.D.
Replacement Nut Retainer for 6-191 Jam Nut

Replacement Nut Retainer for 6-191 Jam Nut

Item # 6-190
lowest price pledge
Our Price: $12.54
Accessories and Parts
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.02 lbs
In Stock
Redline Spindle Nut Retainer Accessories and Parts - 6-190
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Replace a lost or damaged nut retainer with this equivalent part. 1-800-940-8924 to order Redline accessories and parts part number 6-190 or order online at Free expert support on all Redline products. Guaranteed Lowest Price and Fastest Shipping for Replacement Nut Retainer for 6-191 Jam Nut. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (58)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Redline Accessories and Parts - 6-190

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

Replace a lost or damaged nut retainer with this equivalent part.


  • Replacement nut retainer
  • Fits Redline part number 6-191
  • Made in the USA

6-190 Replacement Nut Retainer for 6-191 Jam Nut

Video of Replacement Nut Retainer for 6-191 Jam Nut

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Redline Replacement Nut Retainer For 6-191 Jam Nut 6-190 - 6-190

Hi, everybody. Andy here with And today, we're gonna take a quick look at this replacement nut retainer. If you are needing to replace a lost or damage nut retainer that works with the jam nut, identified by the redline part number 6-191, identified by the redline part number 6-191, then this is exactly what you are going to need. This is made in the USA. And just for size comparison, the overall diameter, we are sitting right at about an inch and 5/8 for the diameter.

Well, that's gonna conclude our brief look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me..

Customer Reviews

Replacement Nut Retainer for 6-191 Jam Nut - 6-190

Average Customer Rating:  4.8 out of 5 stars   (58 Customer Reviews)

Replace a lost or damaged nut retainer with this equivalent part.


Product appear to work well. Little question on the time it took to ship.


All parts ordered to replace a complete brake system on a 25-year-old boat trailer fit perfectly. Ashly from etrailer was very knowledgeable regarding are needs. Thank you!


I was glad etrailer had these. I didn't know where else to look but etrailer came through again as usual.


They had the parts I needed. They delivered them when and where they were supposed to. And the contact person knew their stuff and kept me updated.


has performed as expected would buy aga in


Great service
Always have the correct


All my items were received in timely fashion. Great service @ etrailer.
However, Dexter (I ordered original Dexter parts) needs to up the game on packaging. I ordered four hub assemblies and the bearings were placed in a plastic bag which I'm sure banged around on the hub. A bubble envelope would have been nice to protect the bearings.
I'm looking forward to upgrading my trailer with new Dexter Nev-R-Adjust brakes as was getting tired of constantly manually adjusting the brakes. Glad that etrailer has all the parts I need to do the job.

After a year and a 800 mile trip, everything is working great. Feels like a new trailer.
Dixon R - 10/23/2018


It's currently winter and the RV is in storage. Prior to that, when the RV was in use, I had no problems with the jam nut retainers.


Items were top quality and arrived as promised. Customer service was great in helping identify what was required. I recommend your company to all my friends and i have been doing business with you fir years and have always had great service.


Fit and quality as advertised

still working perfect
David J - 03/16/2021


Ordering parts are easy going. Great help while ordering. Parts are even better than expected. Will definitely be a repeat customer


Fit perfect!


This was for a replacement part that I did not receive with the axle bearing kit. etrailer was very helpful with getting me the part.


This product not seem to fit the axle nut as snuggly I wanted. I actually went back to the old cotter pin, because it felt as though it might come off if I hit a big bump.


They worked as new, no issues.

Many a loaded trailer trips and all is still doing great! Its so nice when a product works like it should!
Philip - 06/18/2019


Excellent service and delivery. Complete follow thru from E Trailer staff keeping me informed on order status. i have used etrailer in the past for other items and always the same. Excellent!!


The retainer fit perfectly and is working with no issues.


Nice stock retaining nut. Fits as should and does what it should. Replaced missing one on my trailer after bearings disengrated and destroyed nut.


I couldn’t believe you had my order ready to ship within two hours after my request. Of course, they arrived earlier than expected. I wanted to have a spare set of these retainers for a long time since I like packing my bearings by hand.I am very satisfied with the quality of the product as well as the service.


Very professional and helpful.
use etrailer again with our question.


great value. timely shipping. will order a lot more from etrailer


no problems


Love the easy to use products with quick delivery time


Fast shipping, perfect fit

Been a year, seals
Mike P - 10/25/2017


Excellent product w/outstanding price p oint!

Show More Reviews

Ask the Experts about this Redline Accessories and Parts

  • Axle Size Nut Retainer 6-190 Fits
    The Replacement Nut Retainer for 6-191 Jam Nut # 6-190 fits Replacement Trailer Spindle Jam Nut # 6-191 which fits 2,000 lb to 8,000 lb axles with E-Z Lube spindles. That means it will fit your 5,200 lb axle if it has an E-Z Lube spindle.
    view full answer...
  • Thread of Spindle Nut 6-191
    I checked with the manufacturer, and the thread is 1" - 14 fine thread for the Replacement Trailer Spindle Jam Nut # 6-191.
    view full answer...
  • How To Secure A Hub Assembly To A Spindle On A 3,500 Lb. Axle
    The majority of most axles use either a retaining nut or cotter pin with a "D" washer and castle nut to secure the hub onto the spindle. I am not sure what you are referring to as most common axle types do not use a lock washer to secure the hub assembly to the spindle, however I have included all the parts you will need to do so. For the retaining nut you will need the Replacement Nut Retainer part # 6-190. If you need the "D" washer and castle nut you will want the "D" Washer part #...
    view full answer...
  • Availability of Spindle Nut Retainer for 3,500 lb Dexter Axle
    Sounds like you are looking for the spindle nut retainer part # 6-190.
    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...
  • Replacement Bearings, Seal and Spindle Nut for Dexter D52 Trailer Axle
    For a kit that has all of the bearings and seal for your Dexter D52 5,200 lb axle you'd want the kit part # BK3-310 and then for a spindle nut you'd want the # 165686.
    view full answer...
  • Availability of Dexter EZ Lube Spindle Nut 006-190-00
    We do have what you are looking for but it is our part number # 6-190.
    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 cotter...
    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...
  • 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 1-1/2 inch. If you just want the nut # 6-191. For the retainer # 6-190.
    view full answer...
  • D Washer Replacement Needed for a Spindle
    It sounds like the washer you are looking for is like part # 5-23 which I have added a photo with specs for you to reference. This type of washer is held in place with a spindle washer like part # 5-101. Are you looking for a replacement bearing as well? If you could let me know what the bearing number is, like the the popular # L44649, then I can help you out with getting a replacement.
    view full answer...
    Image 1 for
  • Replacement Bearings, Races, & Grease Seal For Dexter 3,000LB Axle On 2019 Grand Design Imagine XLS
    The Dexter 3,000lb axle under your 2019 Grand Design Imagine XLS 21BHE will use the following components. Inner Bearing # LM67048 Inner Race # LM67010 Outer Bearing # L44649 Outer Race # L44610 Grease Seal # 58846 Cotter Pin # 165649 for standard spindle or Nut Retainer # 6-190 for EZ Lube spindle
    view full answer...
  • Washer Needed to Install Dexter Trailer Idler Hub Assembly for 2,000-lb Axles
    If the Dexter Trailer Idler Hub Assembly for 2,000-lb Axles # 8-91-05UC1 is what fits your axle/spindle then you can use the Spindle Nut Kit for EZ Lube Axles # RG05-100 for an EZ Lube spindle or parts # SW1000, # 6-190, and # 165686 for a standard spindle.
    view full answer...
  • How to Remove a Hub From a Trailer Spindle
    To remove a hub from an axle, you will need to first remove the grease cap on the end of the hub. This will expose the end of the spindle. Once at this point, you will need to see if you have an EZ-Lube spindle, like # TRU77FR, or a standard spindle, like # TRU57FR. If you have the standard spindle, there will be a castle nut threaded onto the end of said spindle that is locking a fairly large washer in place. This will be locked in place by a cotter pin, like # 165649. These will all...
    view full answer...
  • Replacement Bearing Kit for Dexter 8-248 Trailer Hub
    The bearing kit we offer that matches the bearing numbers you need is the part # BK2-100 which includes the # L44649 and # L68149. The exact hub you have is our part number # 8-248-50. The cage style of nut retainer that you have is our part number # 6-190 as well.
    view full answer...
  • Bearings, Races, Grease Seals, and Nut Retainer For 3,500LB Dexter Axle on 2021 Carry-On Trailer
    We will not have a specific bearing kit with the Nut Retainer # 6-190 that you are looking for. We will have all the parts available individually so you only get what you need. I will list all the parts needed below for complete axle. 2-Nut Retainer # 6-190 2-Inner Bearing # L68149 2-Inner Race # L68111 2-Outer Bearing # L44649 2-Outer Race #L44610 1-Grease Seal # RG06-050
    view full answer...
  • Replacement Interior Wear Components For Dexter 8-248 Idler Hub
    Your Dexter 8-248 Hub # 845475UC1 uses the following interior parts. Inner Bearing # L68149 Inner Race # L68111 Outer Bearing # L44649 Outer Race # L44610 Grease Seal # 58846 Grease # L11390 Depending of if you have a standard spindle or E-Z lube spindle there are different grease caps available. Grease Cap # F001518 standard spindle Bearing Buddy # BB1980A upgrade to standard spindle Grease Cap # DC200L-DCRP for E-Z lube spindle And finally there are different nut retainer based...
    view full answer...
    Image 1 for

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Laura H
Updated by:
Laura H
Employee Andy C
Installed by:
Andy C

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.