Is there a recommended nut & bolt vendor(s) that stocks the original-style panhead "stovebolt" machine screws used on our Stovebolt Chevy 6s?

See pic of an original 235 valve cover screw and spreader on my 55 3100 First Series.
Attachments
55 Stovebolt.jpg (89.18 KB, 208 downloads)

Last edited by ol 55; 01/07/2024 12:10 AM.

1955 1st Series 3100
ol'55