Fastener question...where do these go?
 

Body shop gave me a box of fasteners in ziplock bags. Some of the bags either didn't seal or they threw loose fasteners in the box with the bags. Either way, I'm trying to figure ou where some of these belong, hopefully you guys will recognize these....
The first one looks to have been zinc originally and has fine threads around 3/8" die.?
The 2nd pair also appear to be zinc with a funny-looking he'd driver opening and a contained star washer.

My 57 had some clutch head screws like that, I believe in the headlight bucket area. I haven't owned the car since 1970, so memory is a bit fuzzy. The only reason I remember is that was my first experience with a clutch head screw.

Can't help on the others. Sure it is 3/8 and not 5/16 threads? What size is the hex?

The ones in the first picture look like scres to hold window regulators or tracks in. I do not recall seeing the bottom scres

I think they gave you the screws from another car.

Jim, the top pics look like Ford bolts. Perhaps Galaxie, Mustang front sheet metal.

Thanks for the replies guys, if anyone else has thoughts, let me know. I'll return these to the shop in a separate baggie, they do have a few Mustangs in various stages of resto, probably belongs to one of them. Don't want no Ferd parts on me COPO:smirk:

----The two top bolts look quite a bit like tri-power Corvette air-cleaner bolts. The ones that go thru the bottom plate into the carbs......Bill S