Simple radio install question

Weren't there two sets of thin nuts and washers? One set secured the radio to the dash face and the other set went on over the dash bezel? Or am I imagining that? I was just thinkin it would put some stress on the plastic bezel if it was used to also hold the radio in place. Maybe I'm crazy.
Nope, If that were the case one would need to remove the entire bezel in order to remove the radio.

go to any radio place, I bet they have them for free. IIRC they are all the same size, 1/2-20 thin. Others (GM?) could be 7/16-28 but a 65 had the 1/2-20 per this post Radio Nuts
Early A did have larger shafts and nuts. I'm almost certain this model radio has 7/16 NF threads. One way to find out. Pull the horn button, get the nut off of steering shaft and try it on the radio.