T-Deck Plus shipped without an antenna, what do i need to install one?

cross-posted from: https://lemmy.world/post/47111253

I recently bought a Lilygo T-Deck Plus and had assumed it would include an antenna, since i ordered it with an external antenna. Today it arrived and apparently doesn't come with any external antenna, just a hole in the top with a rubber bung where one would go.

I had heard the antenna it comes with isn't very good, so i bought a Stubby from ZBM2 Industries. What i need to know is what connector piece i need to go between the antenna and the circuit board. The little brass-colored thing that the antenna screws onto. What's that part called and is there anything i should watch out for when finding one?