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Price: $1.25

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TruRyde Accessories and Part TruRyde Accessories and Part TruRyde Accessories and Part TruRyde Accessories and Part TruRyde Accessories and Part

Trailer Spindle Nut 1"

TruRyde Accessories and Parts

(61 reviews)

Code:   165686


Price: $1.25

Shipping Special

Shipping Weight: 0.12 pounds


TruRyde Accessories and Parts - 165686


  • Castle nut for spindles
  • 14 threads per inch
  • Size: 1"

FA-SN100 TruRyde Trailer Spindle Nut

Customer Reviews

Trailer Spindle Nut 1" - 165686

Average Customer Rating:  4.9 out of 5 stars   (61 Customer Reviews)

- 165686

by: John M02/11/2014

Brake Drum/Hub unit and associated parts arrived quickly and in great shape! Waiting for warmer weather to install. Have used e-trailer parts before to rebuild all brakes, hubs and bearings on camping trailer last summer but over-torqued one bearing set and had an outer bearing failure - almost lost the wheel! This unit will replace that damaged hub which was gouged by riding on the washer and spindle nut causing grease cap not to seal and leak grease. These parts are first class and fit and install perfectly! 116257


Replaced old hub, bearings and castle nut. Everything working well - no problems and fit was perfect! Ill use etrailer everytime!

John M - 02/11/2015


- 165686

by: Duane B.09/10/2016

I replaced all the bearings races seals and brakes on a small travel trailer. Bill etrailer took my order and three days later I had everything in my hands. Great job Bill ! All the parts were exact replacements and the install went very smooth. There is video help on their website to show how to make the install easier. I have been dealing with etrailer for several years and have never had a bad experience. I was completely blown away by the pre assembled brakes . Backing plate, shoes, actuators, self adjusters and wiring all ready to bolt on. How much easier can it be? With the best prices, fast shipping and great help on line etrailer is the way to go. 293853

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by: dw06/03/2014

excellent 134088



dw - 06/03/2015


- 165686

by: Brian C.10/20/2014

Absolutely phenomenal customer service! Made my order, but realized I needed 2 seals.. sent them an email to change my order, and recieved a phone call and they fixed it for me. FAST SHIPPING! and GREAT packing. I ordered 2 bearing/seal sets, 2 seals, 2 spindle washers, and 2 axle nuts and package came with a box with paper padding, then 3 separate padded envelopes with my orders... Couldn't find a place with better prices... I will be an customer for life. 156986

- 165686

by: PAUL DOUGLAS10/17/2016

Yes I have received your product 1" castle nut as described in parts ordering web page with you . I could not be any happier to say this was exactly what I needed for spindle of tow-able engine hoist and at the best price possibly found and will certainly do business with your co. for any and all I may need or use with this field of products . THANK-YOU very much . REGARDS , PAUL DOUGLAS P.S. Sorry I have no pictures for review 308055

- 165686

by: John O.10/08/2014

This was my 3rd order from Etrailer. All were delivered promptly and in good condition. The trailer hitch for my GMC terrain was a great fit and easily installed. One suggestion though. The pull wire really needs to be longer. I had to extend it about a foot. The other orders were fine. I definitely shop at eTrailer. 155242

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by: James Sponheimer07/09/2015

Mike H. Was really helpful & knowledgable . Thx for all ur help ! 210460

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by: paul e07/23/2016

I would like to thank the people who helped me with the purpose of a hub. they went out of there way to make sure I got the right part they were Ellen Pat Mandy if I ever need trailer parts I will be sure to use etrailer thanks for the good service 275559

- 165686

by: EMEInMD05/04/2015

purchased spare bearings, races and grease seals "JUST" in case. As always, great prices, speedy packaging and shipping along with notifications of tracking numbers. I never shop anywhere else for my trailer gear.. 189909

- 165686

by: Bernard B10/06/2016

One Of The Best Companys I Have Had To Work With. These 3 Girls You Have Are The Best. Jennifer S Hally C Carla.M Don't Know How Much You Are Paying Them . ( But It Is Not Enough.) 303831

- 165686

by: Rodney03/12/2013

Looked at all part stores for this but no one had it. Only needed one but ordered 10 because of the low price. Just what I needed and was very fast shipping. Will order from you again. 70168

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by: AndrewP09/16/2016

The product was great. Only thing is, I ordered the wrong size nut. It was not the seller's fault. It was to go on the axle of an old boat trailer kit for which I had no paperwork. 295544

- 165686

by: David M06/15/2015

Parts are exactly what I needed. Carry them as spares for our car dolly. You will not find the 1" spindle nut at auto parts stores. You need to be prepared ahead of time. 203612

- 165686

by: KT01/14/2017

Had some trouble finding these a couple of years ago at the local auto stores so I got ordered some extras. They are exactly like the ones on my 3500 lbs axles. 332594

- 165686

by: James E01/20/2017

The products I ordered were what I needed for trailer wheel bearing replacement, and spring replacement. I will definitely be back, as I need trailer parts. 337077

- 165686

by: Tim W.08/14/2015

It's a nut...that goes on a spindle. It's steel. Seems of good quality. Had a light film of oil on them to ward off corrosion, which is good. 219268

- 165686

by: Glenn B.01/13/2012

These complete the collection. I keep a few of these on hand. When the bearings go these nuts are usually ruined. Thanks etrailer 29602

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by: Ron W.04/24/2015

The ease of finding a hard to find part was a great experience. I will certainly use in the future! THANKS! 187815

- 165686

by: Michael S06/23/2014

Will buy all my trailer needs from E-trailer. Products are reasonably price and shipping is fast.. Thanks guys !! 137244

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by: Jeremy07/01/2014

these are an item that rarely need replaced. i bought this one incase of a failure while traveling. 138488

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by: pappoose01/14/2011

great nuts great nut brand new plan to replace my old nuts with new since im going with new assembly 5501

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by: Mike08/18/2016

Gotta love when you order gets to ya the next day. It's a castle nut. It fits and does its job. 285300

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by: Joe09/21/2015

fits my 1999 Kaufman 3 car wedge trailer with Dexter 12"x2" brakes 6k 7k lb axles 8 lug wheels 226702

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by: Dan S.05/16/2015

These axle nuts are of excellent quality.They allowed me to finish my homemade tractor cart. 193498

- 165686

by: Joe B.08/07/2014

Not much to say really. Just what I ordered, looks good and it works. 145010

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by: Pete Lopez10/22/2016

Excellent pricing and online service. I will use E trailer again! 309804

- 165686

by: dawn d11/07/2014

everything was great and the shipping was very quick. thanks! 159770

- 165686

by: Robert02/17/2017

Excellent, right size and fast shipping. Would recommend. 342787

- 165686

by: Brent Rossman12/08/2016

Could'nt be happier with the fast shipping, and parts! 323377

- 165686

by: Casey B06/15/2011

As described. Great price, and shipping was very fast. 17003

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by: George E10/08/2014

large or small order, your service is great. Thanks 155252

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by: KMa04/05/2015

Well, it's a spindle nut. It holds my bearings in. 183290

- 165686

by: Dan Browning09/02/2015

Good selection, reasonable prices, fast service. 223458

- 165686

by: Dave I02/26/2014

Right sized nut, hard to find in hardware store 117814

- 165686

by: DPlante12/22/2013

not needed- used 1" nut #165686 on 3500# axle 110847

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by: David A07/07/2015

Perfect match for the spindle on my tra iler! 209872

- 165686

by: Mark K12/23/2014

everything came as expected. quick deli very 166594

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by: John09/02/2016

Nut was a direct replacement. Worked we ll 290424

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by: Mike05/09/2016

Product arrived and worked as advertise d. 249260

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by: Dan W06/07/2011

these are exactly what I needed thank y ou 16342

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by: Larry Leckie06/03/2013

Product as advertised, service superb 82963

- 165686

by: Nick S08/01/2016

Solid quality and easy on the wallet 278169

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by: tim k09/07/2013

what can I say - it's a nut - fits 98816

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by: Predator Motorsports04/18/2012

Product came fast, Great service 37628

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by: bvf04/07/2014

No complaints, great service. 124116

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by: Mike L07/24/2012

Perfect fit & Quick Shipping! 49174

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by: R.10/22/2016

Good quality, good price. 309647

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by: John L06/22/2012

Spindle well 45251

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by: dan bond10/05/2014

instant shipping thanks 154512

- 165686

by: Jason B.09/13/2013

Great fit and Finish. 99733

Show More Reviews

Ask the Experts about this TruRyde Accessories and Parts
Do you have a question about this Accessories and Part?

  • Is a Spindle Washer Needed Between the Spindle Nut and Outer Bearing on Dexter 5 on 4-1/2 Hubs
  • Yes, there should be a washer of some type between the spindle nut and the bearing on your trailer. The washer protects the back side of the bearing from the edges and points on the back side of the spindle nut. There are several types of spindle washers available depending on the spindle configuration on your trailer. The Washer For 1 inch Spindle, # SW1000, is typically used on spindles that have a castle nut, like # 165686, and a cotter pin, # 165649. A D washer, # 5-23, would...
    view full answer...

  • How Tight Does the Castle Nut on a Trailer Spindle Need To Be
  • According to our installers you will tighten the trailer spindle nut until it stops by itself. In other words do not torque it down as hard as you can. It just has to be tight. A little play is to be expected. You do not want to torque it down too tight, because that makes the bearings too tight and then that generates heat and your bearings come apart. You might want to try tightening it a few times to get a feel for where it seems like the spindle nut naturally stops. Once it is...
    view full answer...

  • Which Lock Washer Do I Need For My Dexter 5,200 lb. Trailer Axle
  • For a lock washer for your Dexter 5200 lb axle, you will need Washer, part # 5-23. If you need a tang style washer, you will need part # 5-101 The tang style washer is used on E-Z Lube spindles and functions the same as a cotter pin, but designed for the E-Z Lube Spindles. If you need a replacement spindle nut, you will need Trailer Spindle Nut, part # 165686. The lug nut you will need Trailer Wheel Lug Nut, part # X1023R, which is sold in a quantity of 1. The item you selected,...
    view full answer...

  • Replacement Hubs and Wheels for Nuway Utility Trailer
  • Sorry to hear about your bad experience but we can help you. New hubs must use the same bearings as the ones that were stolen to ensure they will fit on your spindles. New wheels must also use the same bolt pattern to ensure they will fit on the hubs. Since you don't have your hubs you can measure your spindles using a digital caliper like # PTW80157 to determine what bearings will fit. If you refer to the linked image you will see the points on the spindle that you need to measure...
    view full answer...

  • Availability of a Replacement Castle Nut for a Harbor Freight Trailer
  • 25 mm is very close to 1 inch, so there is a good chance the castle nut part # 165686 would fit as it is 1 inch. This has 14 threads per inch, so you will need to compare that to your spindle to determine if it will match up.
    view full answer...

  • Spindle Nut Recommendation for a 3,500 lb Axle
  • Since you have a 3,500 lb axle most likely the diameter of the threaded portion of the spindle is 1 inch. You will need to verify that. And since the spindle has a hole in it for a cotter pin you would need a castle nut. For that I would recommend the Trailer Spindle Nut # 165686. For a compatible cotter pin I would recommend the Cotter Pin part # 165649. The Spindle Nut Kit # RG05-100 that you referenced is for a different style spindle so I would not recommend it for you.
    view full answer...

  • Torque Rating for Spindle Castle Nut
  • When installing the castle nut on the end of the spindle, there is no specific torque rating. The nut is ran down until there is no side to side play in the hub, and then backed off to the next notch in the castle nut so the tang washer or cotter pin can secure the nut. Over-tightening the castle nut can damage the bearings, races and spindle. If you click on the video link I provided, and fast forward to the 4:45 minute mark, you can see the procedure.
    view full answer...

  • What are the Inner and Outer Diameters of the TruRyde Trailer Spindle Nut
  • I pulled the TruRyde Spindle Nut, # 165686, and took some measurements for you. This nut has an inner diameter of .93 inches and and outer diameter of 1.45 inches. This spindle nut is designed to fit all spindles that accept a 1 inch nut. I have attached a photo of the measurements I took for you and a photo of where to measure on your spindle to see if this nut will fit.
    view full answer...

  • Should There Be a Washer on Trailer Spindle Between Spindle Nut and Outer Bearing
  • There really should be a flat washer between the outer bearing of your hub and the nut that holds it on. The washer protects the back side of the bearing from the edges and points on the back side of the spindle nut. The Washer For 1 inch Spindle, # SW1000, is typically used on spindles that have a castle nut, like # 165686, and a cotter pin, # 165649. A D washer, # 5-23, would be used on a spindle that has a flat side and uses the same castle nut and cotter pin setup. A Tongue...
    view full answer...

  • Availability of Replacement Washers for 1-Inch Spindle for Dexter Trailer Hubs and Drums
  • Thanks for the comment. We do have replacement washers # SW1000 for the hub and drum you referenced # 8-173-16UC3. We also carry 1-inch trailer spindle nuts. The replacement part is # 165686. You may also need a cotter pin. The replacement part is # 165649. If you have an EZ Lube Spindle you will need different parts. Just let me know so I can make the proper recommendations. I have linked a video showing how to remove and reinstall a trailer hub.
    view full answer...

  • Bearing with 1 Inch Inner Diameter and Race with 1.966 Inch Diameter
  • If you are talking about the inner diameter then the only bearing we have with a 1 inch inner diameter is # L44643. The matching race is # L44610 and it has an outer diameter of 1.980 inches. For a 1 inch spindle nut we have # 165686. The best way to determine the correct replacement bearings is to go by the inner and outer bearings numbers that are stamped into the metal on the sides of the bearings. Otherwise you would need to measure the spindle using dial or digital calipers for...
    view full answer...

  • Replacement Seals and Castle Nut for 2000-lb Dexter Axle with EZ-Lube Spindles and 5-Lug Hubs
  • The best way to identify replacement grease seals (and bearings and races) is by the original part reference number. The linked photo shows the typical location and appearance of these part numbers. It can be a bit of work to get the parts clean enough to read the part numbers, but this is the preferred method. The alternative is to take precise measurements (of the seal itself or the spindle) using a digital caliper. You can then use the seal's part number or its inner and outer dimensions...
    view full answer...

  • Availability of a Replacement Castle Nut for Trailer Spindle
  • We have a few options that could work for you, but you will need to measure the threads of your spindle to determine which would work. For a 1 inch spindle nut you would need the part # 165686, for a 7/8 inch nut you would need part # 165931. These are the two most popular sizes.
    view full answer...

  • Thread Count for Trailer Spindle Nut # 165686
  • The Trailer Spindle Nut # 165686 that you referenced does have a thread count of 14 threads per inch.
    view full answer...

  • Spindle Nut Kit Recommendation for a Dexter 6k Axle
  • Since the D60 Dexter Axle uses a cotter pin and castle nut the # RG05-100 would not be the correct kit for you. For that I would recommend the Trailer Spindle Nut # 165686. For a compatible cotter pin I would recommend the Cotter Pin part # 165649. People use channel locks typically for installation and removal of these castle nuts since they don't really get torqued down and the length of the spindle prevents most standard sockets from being easily used.
    view full answer...

  • Why Does One Brake Assembly Drag more than the Other After Brake Install
  • If you installed self-adjusting brake assemblies then you would be fine as the brake tension will adjust itself. If you installed manual adjusting brake assemblies you would need properly adjust the brakes to get the correct amount of drag on all hubs. To see how to set the proper drag on trailer brakes check out the video I attached. Fast forward to the 4:30 mark. Remove the adjusting hole cover from the adjusting slot on the bottom of the brake backing plate. With a screwdriver...
    view full answer...

  • Can the Trailer Hub and Drum Assembly # 84546UC3-EZ be Installed on Either the Left or Right Side
  • The Trailer Hub and Drum Assembly # 84546UC3-EZ that you referenced can work on left or right sides of a trailer. This gets held on with a castle nut like part # 165686. Check out the video I attached on removing and reinstalling trailer hubs to see how it all comes apart and goes back together.
    view full answer...

  • Replacement Spindle Washer, Castle Nut and Cotter Pin for Dexter Spindle
  • The linked page displays all the trailer spindles we offer and specs including weight capacity and thread diameter. All spindles we offer have a 1-inch-diameter threaded portion that accepts a spindle washer like # SW1000 and a castle nut like # 165686. For a cotter pin you can use # 165649.
    view full answer...

  • Replacement Hubs, Castle Nuts, and Tang Washers for a 2010 Venture Boat Trailer
  • I believe the correct hub for your Venture boat trailer is # 34822BX. It uses L44643 inner and outer bearings that have a 1 inch diameter. Based on your picture you have the same 4 on 4 bolt pattern as this hub. It is compatible with 10 to 13 inch tires. This hub is associated with a BT8 spindle which uses a 1 inch castle nut # 165686. And it sounds like you have tang washers such as # 5-101 which is used instead of a cotter pin.
    view full answer...

  • Inner Wheel Bearing Recommendation for a Number 84 Spindle
  • The inner and outer bearing surfaces on a number 84 spindle are different diameters. The outer bearing will ride on a 1.00 inch diameter surface and the inner bearing will ride on a 1.378 inch surface. It sounds like you have the correct outer bearing and now are in need of the correct inner bearing. For that you would want the part # L68149 that you referenced. You will want to use a spindle washer. The washer protects the back side of the bearing from the edges and points on the...
    view full answer...

  • Spindle Nut Recommendation for 84 Spindle
  • For your 84 spindle the correct nut would be # 165686 which is a 1 inch spindle nut.
    view full answer...

  • Replacement Spindle Nut for Dexter Nev-R-Lube Axle with 50mm Cartridge Bearings
  • The Dexter Nev-R-Lube axles that use the 50mm cartridge bearing # 31-71-3 use a 1 inch spindle nut, # 165686. If you also need a tang washer use # 5-101. For a cotter pin you would use # 165649. And for a regular flat washer use # SW1000.
    view full answer...

  • Can Performance Tool Installation Set Be Used On Grease Seal With Diameter Of 3.37 Inches
  • The discs that are included with part # PTW83020 include discs that have a diameter of 2.47 inches and 2.555 inches. The inside diameter of the 10-36 Grease Seals, part # RG06-070 is 2.25 inches so the tool with the larger disc will work for installation. You will want to make sure you have the tool centered properly so you catch the outer ring of the seal when using it to install. A socket is normally not used on a spindle nut like part # 165686. Typically channel locks are used...
    view full answer...

Do you have a question about this Accessories and Part?


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Information for this part was:

Expert Research:
Michael L
Expert Research:
Jameson C
Expert Research:
John H
Photos by:
Zach O

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Info for this part was:

Expert Research:
Michael L

Expert Research:
Jameson C

Expert Research:
John H

Photos by:
Zach O

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