GMC and Chevy TF doors slightly different

[1project2many]

Interesting about the hinge bolts. My '57 has fine thread bolts on both doors. The driver's door is original and the original passenger's door, which I removed, also had fine thread. The replacement RH door is from a '55 'burban and I thought someone had hacked it up by putting coarse thread bolts in so I cut the plate with the fine nuts out of the original door and welded it into the new one.

How about the countersunk screws which attach the inner panel? Is clutch head correct? Or Phillips? I've seen both.

[wanna4door]

Originally Posted by 1project2many

Interesting about the hinge bolts. My '57 has fine thread bolts on both doors. The driver's door is original and the original passenger's door, which I removed, also had fine thread. The replacement RH door is from a '55 'burban and I thought someone had hacked it up by putting coarse thread bolts in so I cut the plate with the fine nuts out of the original door and welded it into the new one.

How about the countersunk screws which attach the inner panel? Is clutch head correct? Or Phillips? I've seen both.

I have come across countersunk screws for the inner panel in 2 different sizes. A 55 parts truck had smaller screws than my 57. I just drilled and retapped the holes in the door to match my larger screws. I've found the larger ones on several doors.