There is no interior lock on the passenger side door on these things.... From what I can tell it's probably a 5-40, 5-44, or 6-40 machine screw and 3/4" long. None of these are readily available at your local Home Depot. I did try one fastener shop yesterday and a royal A-hole that was in no mood to help find screws for an 80 year old truck was working the front desk. So, I'm hoping someone can confirm the specific screw and I'll find it somewhere.
