[QUOTE=obrentharris;22829309]I purchased this very nice Peter Mooney frame from the local non-profit bike shop. The missing barrel adjusters are not the 5mm ones I'm used to. They appear to be M4 x .7.
When I finished the paint touch up I though I was in the clear but I'm striking out finding replacement adjusters. I've tried both Shimano and Campagnolo adjusters from their adapters that convert downtube shifter bosses to adjustable cable stops with no luck. The Shimano is 5mm and the Campagnolo is 5mm with 4mm flats.

Any help is appreciated.

Thats a Walter brand CS60 head tube lug. The adjusters are M5, not M4. It looks smaller because of the paint in there. Gently and carefully run a tap in there and you'll be set.