Zerk fitting thread size...sheesh.

[Techlight]

Hey all...what size size and TPI are the zerk fittings on my stock 84 CJ7 ?

This seems like such a simple question but I've been trying to find the info for like 45 minutes on the web (searched the forum too)...either way I can't find the info

I'm also curious if all the zerk fittings on my Jeep are the same size/thread (assuming stock) or will they be different size/thread in various places across the Jeep?

Thanks in advance for the edumacation on something that seems like it should be so easily available on the web.

 

[Torxhead]

Somewhere there has to be a set of standards for lube zerk fittings. Anyway, they do have a tapered thread with a 1/4" max outside diameter with 28 threads per inch. So I just use a 1/4-28 tap to clean out those holes when they get banged up and it seems to work out fine. A tap drill for that would be a #3 which is a .203 diameter. They are all the same size on a CJ also.

 

[73CJ]

1/4-28 tapered

 

[Torxhead]

I found this: 1/4"-28 Taper Thread Grease Fittings, 1/4"-28 Zerk Fittings, Taper Thread Grease Fitting

 

[GARGOYLEJEEPER]

Here is the zerk tool, this 1 is a Snap-On 4-way.

 

[IOPort51]

I think this is a 1/8" pipe tap.

 

[Torxhead]

IO, a 1/8 pipe tap requires a .339 tap drill, a bit large for a standard zerk fitting.

 

[IOPort51]

IO, a 1/8 pipe tap requires a .339 tap drill, a bit large for a standard zerk fitting.

OK you convinced me.

But it is an NPT is it not??

 

[Lumpy Grits]

Make sure you DON'T have metric zerks-They're out there--
LG

 

[Hedgehog]

After looking for a taper tap for my zerk fitting repairs and being treated like I was stupid a mechanic finally told me that he just uses a standard 1/4-28. I've repaired several this way and haven't been had any troubles.

 

[GARGOYLEJEEPER]

About the only time I use that tool is on the 45 and 90`s, and that is mainly on the 2A & Willys. Most of the time I use a 1/4"sq.dr. deep socket or nut driver, and some times on the angles I am forced to use a wrench due to space issues. On the 2A and old Willys also has 1/8" taper fittings.

 

[Techlight]

Hey I'm a "bit" slow on response haha...thanks for the responses. I was asking cause I had a few zerks I needed to change and was about to buy one those tools you listed as well.