Technical Door hinge screws

Hello. Any body have a source for door hinge screws for a 1933 Chevy.
I would guess that they were used on a lot of years Chevys.
They are 5/16 24 and about an inch long. Flat head with a straight cut for a standard screwdriver.
I got all of mine out so far, but they are not usable now.
Thanks

 

Try Mac's or Langs.

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Filling Station

 

Squirrel nut is right - and ya dang lucky ya got them out


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Thank you. Looks like the GM 1030