Because of your questions on the Camaro AM antennas, I pulled my parts out yesterday and took some photos:
antenna mast tip, antenna mast lower end with other parts, mount and retainer from lower side with PNs, antenna connector showing 'chevy bowtie script'. I could not find a PN on the mast itself, nor on the cable connector, but mine had an A-1 on the side opposite the bowtie emblem. PN on the base (which fits against the fender) is: 3937665. The pn on the lock wasn't entirely legible, but might have been 3943655.