Tap size + cleaning threads + steering zerk

[rreegg]

Couple years ago I replaced some steering components and needed to change from a straight zerk to 90* in one spot. The original threads got kind of buggered out as the 90* was a bit bigger. The zerks I have no longer thread cleanly into place
I don’t know enough about tap sizing to determine what size zerk I have and what is the proper tap size to buy. Furthermore I think ( and might be wrong) the 90* zerks I have are 1/4” npt - which have a tapered thread?

At the local hardware store they have a lot of taps but nothing that seems right. Staff is knowledgeable but not sufficiently for my use case

What are my options to get a new greasezerk on the steering?

 

[Jesus Freak]

Shooting from the hip, id say you're pretty well gonna have to roll with it until you replace that tie rod.......unless you can find a zerk fitting that has an odd size...... kinda like the "Wentworth bolts" in the second Cars movie.......

 

[Clb]

Your biggest problem is that the tin cap on the rod end is thin.
It's probably an 3/16-28 ( you have 28 pitch lt= lubrication thread) from napa
Look for the next size up/down depending on what fits...

Honestly I don't remember.
However the other thing is shrapnel is getting into the rod end, not the end of the world butttttt...
Npt threads will look tapered, or conical .
Machine will look like a non wood non sheetmetal " machine screw.
Lubrication threads also have a taper, different of course.
Last ditch, get a pointed rubber zerk nipple and force in some lube.
Good luck.
Eta
What he said.
Also try a metric, made in canaduh aye...