These are the nuts that go on the volume and tuning shafts
that stick out through the dash on a 57 GMC. I don't
know if they are the same size on a Chevy radio or not.
I do know that they are an extremely wierd size.
1/2" x 28 threads per inch.
I have tried local hardware stores, Radio Shack, local
electronics supply houses, places that install car radios
such as Best Buy and plumbing supply places. Neither
Carter's, LMC, Golden State nor Heavy Chevy list them
in their catalogs, but I have not yet called them to
I know that there is at least one person on the list
that restores old car radios. Maybe he will have an
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959