05-05-2024, 10:41 AM
In electronics they are generally called "hole plugs" and the ones I have on hand have a nickel plated finish. The variety used in plumbing are usually called "plug buttons" and have a chrome finish. For local purchase a good sized hardware store such as Ace or True Value will likely have a better selection than a home center.
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/