Technical 1936 rear window screws

I'm too busy and lazy to figure this one out. Figure someone can answer this for me faster than I can research it. So here's the question. What size screws / thread pattern hold a 1936 Ford coupe rear view mirror in place ? And do bob drake , vintage ford , Dennis carpenter , Sacramento Ford carry them ??? Thanks

 

Don’t know about the rear view mirror screws, but I got tired of paying the markup for four screws from Drake, et al, and started buying full bags of stainless screws from Fastenal for the same money as four screws.

I heard Fastenal doesn’t sell to individuals any more, but any online fastener vendor should have them.

Ford liked fine threads.