[Terry M. Hunt]

Refinishing the attaching screws for the heater blower case and evaporator case on my 66 GTO. These are the screws that attach these two assemblies to the firewall. I have a total of 12 screws. 11 of them are identical to example A in the attached photo. There is only 1 that looks like example B. Is example B intended to go in a specific location or for some specific purpose? Or maybe it’s just a random screw that somebody used because they lost one of the screws while working on the car in the past? I forgot to note what location this odd screw came from when I removed it.