I was looking at Thrashing Cow's photos of his S-11 on his thread, especially the bolts & washers, as I didn't label some of mine and I have a lot of research to do.
Anyway, for example, I was looking at his front inner fender shields that bolt along the top to the fender, five on each side. His car has hex bolts with the recessed inner head and exterior teeth washers. But my car and another I've seen on here have beefier bolts with larger heads. My car also had interior teeth washers on these particular bolts.
These S-11 Desoto's of this design were the same from 1946 to about early 1949 if my info is correct. So his should be like mine.
Could this be a change from year to year, or Canadian vs. American models or Custom vs. Deluxe? Would a Custom have beefier fasteners in some places than the Deluxe models? Or maybe just a factory thing: they ran out of the other kind of bolts!
It's a process going through the parts book and counting pieces and sizes and etc. etc. etc. In a way it's kinda fun, especially as I don't have the weather or money to do more major work.