67 Vent windows

[navyflyer72]

I just had my vent window pillars rechromed and am happy with the way they turned out. I installed the new weather-stripping and am about to install the vent windows back into the doors, however, I am trying to figure out what type of bolt or screws attach the pillar to the door at the base of the chrome pillar where there are two holes, one threaded and one not (the one without threads has a recessed area that looks to fit a tapered screw of some sort, pictures or a place to buy exact job-specific fasteners would be helpful. Thanks in advance.
-George