Does anyone have a source for this male connector? Used for antenna and speaker on an Airline I am working on, I've also seen them on Zenith TO's. (Female half also shown for reference)

Looks like standard bullet crimp connectors.

There are various sizes. You can probably get them at an auto parts store. Pull the plastic sleeve off and they should look the same.

If you are not a stickler for originality, just use a cut down nail, or a screw.

Yea, something like automotive might work, or perhaps a large male Molex pin. Hard to tell the size of those from the picture. Or advertise with a WTB in case someone has some stashed back somewhere.

Here's a tip......

Next time you're at the hardware store, get a selection of different sized pop rivets. After removing the pin, the outer part comes damn near the many pin sizes used in the old radios. An example is the battery setups I like to make for my Transoceanics. The pins used are right-sized for the chassis plug and are easily solderable. They make for the neat job.

...Jim

Hardware store, Harbor Freight, your local electrical supplier, etc. Look for a $7.99 terminal kit. Usually comes with ring, spade, bullet, etc. in a few different sizes. I've found the blue bullet work just fine on Motorola, Zenith, etc. speaker connectors.
We used these a lot back in the car stereo install days.
Dan

Thank you everyone, I found some 4mm bullet crimp connectors that are perfect.