Heelp!!!!!!!!

I had to get a die for my Pittman arm stud, its outside . I think (I am almost positive) it's 1/2" Coarse. Hardware like that is cheap, you could buy a few.... I know it's a 3/4 socket....I think...maybe 13/16". Old age and (burp) it's been a year or so since I had to mess with mine, had to drop the drag link for headers. I can measure mine, but it will be almost 17 hours before I can get to it. (it is 1/2 on my 66 sat)