Steering shaft pin

a little lube and some taps with a smol hammer usually does the trick.

i have to ask, though, you've got the steering column loose so that it can slide up and off the box correct?
Yep! Finally got it off with a picklefork and some strong hits. Its definitely been on there for 50 years.

I had every bolt off the column and it was super loose and moving about 3" when tryign to pull it up off the steering box and wouldn't budge. Finally got it with some pickefork smacks