They are headlamp adjusters. I have some NOS GM ones I purchased in 1996. GR 2.737 Nut/Screw #3-5956686 Not sure if GM discontinued them but you may want to give a GM dealership a try using those numbers.
David
http://FirstGenFirebird.org/show/closeup.mv?CarID=571 If i don't get this car back on the road soon i'm gonna go postal! On a quest for FGF knowledge 1968 Pontiac Firebird Convertible 1969 Oldsmobile Cutlass "S" Convertible *Sold*
