On an '89 IROC (10 bolt w/ drum brakes), what is the thread on the emergency brake equalizer/adjuster? Is it 1/4-24, 1/4-20, or metric? I've done a search and come up empty.

I'm in the middle of swapping in a '95 posi disc brake rearend and can't get the nylock nut off the threaded rod for the equalizer/adjuster b/c it jams part of the way down. I'd like to run a die up the threaded rod to clean it up but want to be certain what the thread is.

Here's a pic of the threaded end I'm talking about:



Thanks!

 

My 85 takes a 10 mill. wrench,looks to be a 6 or 8 mill. fine thread

 

Yep, it's an 8m x 1 thread. Thanks!

Btw, here's a pic of how we solved the equalizer issue. If the thread hadn't been messed up on the original cable, it might have been long enough as it was.