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1-3/4" Long cotter pin locks a castle nut (sold separately) in place.
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this one eighth of an inch cotter pin. This is going to help to secure your castle nut, so that you don't have to worry about that castle nut coming off. So each arm of this pin is about one sixteenth of an inch, so when you have them combined there, it is gonna be one eighth of an inch. As far as our length goes, our overall measurement, we're looking at right two and a quarter of an inch there. Our usable length from the inside of that bend to the shorter arm, is going to be right at, call it one and three quarters of an inch.
So this is going to be made of a rough steel construction so it should do a really good job for you making sure that castle nut stays in place so that you don't have to worry about that coming off. So if you are needing a replacement one eighth inch thick cotter pin, this is going to do a great job for you. You are just gonna get the one pin with this part number so if you need multiple, obviously just increase your quantity. So that's gonna complete our look for today. Again, I'm Michael with etrailer.com, thanks for watching..
Its a cotter pin...works well
Delivered extremely fast
Product came fast, Great service
order was recieved quickly and in good shape.
It's a cotter pinI had to spend an extra .15 cents to get free
shipping !!
Just as described, arrived promptly as always from etrailer.
I am amazed by the detail of the item description on this. There is an actual video of trailer describing the cotter pin, guy even breaks out a ruler to show size. For sure sold me enough to buy two of them, instead of digging through my coffee cans of assorted bolts, screws, to find possibly what I may already have.
Products are great. Help desk was even better. Helped me get the correct brake assembly for my rv
Victoria H.
4/12/2025
Thanks Larry! If you need anything along your journey, we'll be here to help :)
Exactly what it says it is! I try to have a couple spares in my camper (along with bearings and races) in case I have to service the bearings before I can order supplies.
Great service, quality products, fast delivery.
Easy to reorder parts for the same trailer.
A really great cotter pin.
Daryl 
2/12/2025
Well, one year later, these pins are still cottering successfully!
Jerred H.
2/12/2025
The cotter pins are very good.
I have been purchasing my trailer wheel seals and cotter pins for many years from ETrailer. Never had a problem.
Thanks to both Joshua and Ginny for the immediate assistance and attention to this order. Their response time was exceptional and resolved the issue without any delay. This is why I am a repeat customer and recommend etrailer to many of my friends, customers and co-workers!
Brooke M.
12/3/2024
They sure are awesome at what they do! Ill make sure they get to see this review. Thanks!
Just repacked bearings with new seals on my 4' x 8' folding utility trailer. Customer service was great in helping me with selecting the right parts including cotter pins. All is good now. I have been ordering from etrailer for 10 + years. Great place with great people!
Skip P.
8/2/2021
Great
ETrailer is the best! Fast shipping and super helpful customer service.
It is a cotter pin. Did what it was supposed to
We have a 2022 Forest River Forester 2551DSLE. Unfortunately it really doesn't come with a usable spare tire holder or a spare for that matter. It had a 4" steel bolt pointing straight down that would be completely worthless. No way I'd be strong enough to get a 75lb tire up there. After lots of measuring this was my only solution. BAL makes 2 products but neither would fit. I mounted 2 X 1" square aluminum bars for the tire to rest against. The winch itself mounted with 2 5/16 stainless hex bolts with nylon topped nuts to keep them from coming loose. The round bar that winches the tire into place uses a 1/8" cotter pin to hold it in place. The hole for the cotter in the bar was drilled in the wrong place so I had to cut off about 1/4" of the tube to get it to fit. I used an original Ford 16" wheel for an e450. The fitting that holds the wheel is about 7". Make sure it is centered as you winch the tire into place. Once up and properly in place it seems secure. Hopefully this will solve our problem of no spare. I would have given this 5 stars if everything would have lined up out of the box. The winch itself seems to be pretty heavy duty and this is the kind of thing that hopefully won't need to be used that often.
I received my brakes and inner grease seals and cotter keys one day earlier that was great,I’ll be installing them tomorrow. I was having trouble finding these double seals, I used some single seals that didn’t work on my boat trailer,they leaked water and threw grease all over my brake shoes, hopefully these double seals corrects the problem.
The right part for the job
The product was great but it never really fit on all the way. I only use it for a yard trailer now. Got tired of sending back and waiting for a different one and gave up on it. My trailer never had any numbers I could use to get the right part. Not your guys fault at all.
Fast shipping! They helped me pick the correct hub for my trailer. Highly recommended!
What a fiasco. My order showed 2 shipping labels. It arrived with only 2 packages and 3 of 4 items arrived. I called on Wed and was told UPS had the 3rd package, that I never got tracking info for and it would be delivered that evening between 4 and 7. It didn't arrive so on Thursday I called to follow up. Was told, oh no it is in Nashville and will be delivered tomorrow. No explanation how it was out for delivery the day before now today it is in the warehouse. I wait 2 days and it still hadn't arrived. Again I am asking for explanation. Everyone pretends to be helpful but the different stories make you wonder is in incompetence or just making up stories to keep from doing their job. Anyway I insist the order needs to be located or reshipped. Finally it is going to be reshipped. I asked for free overnight shipping because of all the issues. Was told to hold on she had to check. She came back and said that the item would arrive on Tuesday regular shipping the same as it would if it were overnighted because Monday was a holiday. I said ok. After many follow ups the item did not arrive until Thursday. I think the guy was Cody pretty much called me a liar by stating that he listened to the conversation and I was told that it was being shipped ground. I called him out on it and told him apparently he failed to listen to the whole conversation as it was discussed both ways and she stated it would not arrive any earlier due to the holiday. I wasn't given a choice after asking for overnight. Your customer service is lacking big time. Not once did anyone say I am sorry, what can we do for you. Nothing.
Always best to use a new cotter pin when changing out bearings and seals. At this price, it was a no-brainer!
Arrived in plastic bag inside with seals. Very nice not just loose in the shipping envelope.
GREAT COTTER PINS
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Gwendolyn Y.
3/11/2025
I'm glad the video helped so much! I'll make sure to let Michael know that his video helped you :)