Probably thinking of the various DFARS regulations, like you can only use stainless steel and various other metals that were melted in the U.S. or other allied

Probably thinking of the various DFARS regulations, like you can only use stainless steel and various other metals that were melted in the U.S. or other allied countries for government/military projects. DFARS compliant 1/4-20 stainless fasteners are ~100 times more expensive than what you'd find at your local hardware store.