Grease Zerk Thread Size?

So the U-joint zerk behind my cardon joint doesn't seal back up after greasing and just oozes a very satisfying popped zit like stream of grease back out. Ive taken it off (7mm socket) and cleaned it out but that didn't fix the issue.

Also took it out in the auto zone parking lot hoping to find the match but the threads on everything they had were a different size. The toyota parts people hardly seem to know what a zerk is let alone the thread size.

I don't have a thread reading tool, anyone know what the thread / pitch is. Whether its a straight or tapered thread? Mcmaster-Carr has a good selection, just need to know the thread size.

Many thanks.

 

When you push new grease in, does old grease come out of the u-joint?

https://www.tacomaworld.com/threads/grease-zerk-thread-size.738196/

 

NAPA used to stock them like pop corn

some of the farm agricultural tractor supply type places usually stock them

 

Yes, it's definitely accepting grease. The little ball inside just isn't springing back to seal it back up.

 

6x1 mm. Good luck finding a metric zerk at an auto parts store in another size.

link: https://www.autozone.com/collision-...MocuO-LEXph0wWgxkJBoCcJgQAvD_BwE&gclsrc=aw.ds

 

Harbor freight sells an entire multi-pack box of SAE or Metric probably the price of 5quant from everyone else (It's not these but for the sake of knowing) They also have this which I highly recommend just in general: