I build model engines and repair old things and like to used NOS screws
and nuts. Last year at a local FM i bought a flat [soft drink or beer
case bottom] of small [6 to 2] screws from the late 40;s or 30's
for$10. They are so nice compared to the crap you get nowdays that are
formed , rolled cold headed.
I was lucky. You should see the sharp edges on phillister heads.
CP