You must be young.
I wish.
Car radios had interlocked mechanical buttons for setting and recalling the station presets -> Radio Buttons.
Yes, I know. But so did cassette decks, for selecting 'play' or 'record' or 'rewind', or for selecting the tape type. So did test gear, like Dave's new picoammeter.
As Praxis has pointed out, 'radio buttons' was a colloquial term, and consequently rather useless for AlphZeta, who was looking for the official name in order to find vendors selling such switches.
AlphZeta, could you provide more detail about why you need this specific functionality, and why for example PCB mounting rotary switches won't do the job?