Best split / cotter pin sizes to keep in the parts stash?

chili_pepper

chicanerous and deplorable
Original poster
Supporting Member
Joined
Apr 27, 2023
Messages
4,551
Location
Murrland
As the title suggests. While I can buy a cheap assortment off AMZ or the like, I know full well most of the sizes included will never see use in my lifetime. I'd rather just keep a supply of usable sizes for the Jeep.
 
Ive got nuts, bolts and oddball stuff Ive been toting around for decades. Buy a small assortment, someday you'll use them all. Far as the TJ goes there isnt a bunch on it that come to mind. The front axle nut, tie rod ends, BJ's, maybe some linkages.
 
  • Like
Reactions: chili_pepper
I carry a lower and upper ball joint castle nut and cotter pins. I believe there is one more on the front axle/unit bearing nut. And two on the tie rod ends. I also carry about 4' of bailing/mechanic/aviation stainless wire.

Don't forget a spare fuel line and don't forget to set up your bump stops correctly every time the springs fall out because you ripped off the shocks.


-Mac
 
As the title suggests. While I can buy a cheap assortment off AMZ or the like, I know full well most of the sizes included will never see use in my lifetime. I'd rather just keep a supply of usable sizes for the Jeep.
There are only 3 sizes on the TJ. The castle nuts used on the steering and OEM trackbar are all the same. That is also the same size used for the upper ball joint nut.
The lower ball joint nut is the second size which leaves the ones for the stub shafts which are the largest.

I'll get the sizes for you later but I would encourage you to test any you wind up with in the holes where you plan to use them. We order in and use 1000's of them in the brake kits. We did that successfully for many years and then we had to send back several thousand because they were slightly too large and you couldn't hammer them through the holes. We returned and they replaced them at least 2 times before we threw in the towel and just started paying more, a lot more from McMaster to get the correct sizes.

My original supplier was sad, they didn't change anything, and after the second time, I told them to test first before we went to pick them up. They related they rejected several batches before they threw in the towel.
 
Ive got nuts, bolts and oddball stuff Ive been toting around for decades.

Yes. I still have shit I pulled off of cars when I was a paint and body tech in the early 90's. :ROFLMAO:

Buy a small assortment, someday you'll use them all.

Noooo. That has never worked to date, and the aforementioned is either so random or specific to a car model, it has little other use.

Far as the TJ goes there isnt a bunch on it that come to mind. The front axle nut, tie rod ends, BJ's, maybe some linkages.

This is good. (y)

There are only 3 sizes on the TJ. The castle nuts used on the steering and OEM trackbar are all the same. That is also the same size used for the upper ball joint nut.
The lower ball joint nut is the second size which leaves the ones for the stub shafts which are the largest.

I'll get the sizes for you later but I would encourage you to test any you wind up with in the holes where you plan to use them. We order in and use 1000's of them in the brake kits. We did that successfully for many years and then we had to send back several thousand because they were slightly too large and you couldn't hammer them through the holes. We returned and they replaced them at least 2 times before we threw in the towel and just started paying more, a lot more from McMaster to get the correct sizes.

My original supplier was sad, they didn't change anything, and after the second time, I told them to test first before we went to pick them up. They related they rejected several batches before they threw in the towel.

I knew you, if anyone, would give it good. As others noted, I suspected there weren't too many, but I haven't refreshed the suspension on my LJ as of yet so I'm not intimately familiar with it (this is part of the prep for that refresh). Appreciate any size information you can throw my way and fully understand and agree with the size verification thing. It's a shame we seem to be regressing from the brilliance of standardized fasteners for no other reasons than cheapness/greed.

For the small numbers I'll probably consume, McMaster-Carr will likely get the nod.
 
Last edited:
Harbor Freight has a box of assorted cotter pin styles that I keep on hand. I try to use the ones that come with the parts, but sometimes you buy a new jeep and want to swap steering components so you have to source your own cotter pins. You know, or like whatever.
 
  • Like
Reactions: macleanflood
Harbor Freight has a box of assorted cotter pin styles that I keep on hand. I try to use the ones that come with the parts, but sometimes you buy a new jeep and want to swap steering components so you have to source your own cotter pins. You know, or like whatever.


Are you not supposed to reuse cotter pins or something? just jam em back in
 
Yes. I still have shit I pulled off of cars when I was a paint and body tech in the early 90's. :ROFLMAO:



Noooo. That has never worked to date, and the aforementioned is either so random or specific to a car model, it has little other use.



This is good. (y)



I knew you, if anyone, would give it good. As others noted, I suspected there weren't too many, but I haven't refreshed the suspension on my LJ as of yet so I'm not intimately familiar with it (this is part of the prep for that refresh). Appreciate any size information you can throw my way and fully understand and agree with the size verification thing. It's a shame we seem to be regressing from the brilliance of standardized fasteners for no other reasons than cheapness/greed.

For the small numbers I'll probably consume, McMaster-Carr will likely get the nod.

1/8" x 1"
5/32 x 1 1/4"
5/32 x 1 1/2" for the stub shafts although you can easily make the 1 1/4" work.