Yes the ones you mean,have a plastic crosshead screw which expands the insert fitted first into the panel......called scrivets..........i have a brand new box of them
how many are there on the panel ........your answer saves me going outside to check my panel
these scrivets are used elsewhere such has engine splash covers etc................they are available in several sizes............the ones i have and ive used them on the engine splashcovers are for a 10mm hole