As @jensa mentions these are circular style connectors, tons of vendors. Note that they are normally sold as housings and you insert the contacts.
You can search on digikey for example “circular connectors” then select “housings”. Narrow it down by number of pins (32?), plastic material (or maybe composite), and that it uses a “threaded” mating instead of bayonet (unless it’s some sort of latch?).
You can further narrow it down to see if the size is standard (they have a variety of standard sizes & pin arrangements, check catalogs like linked above or here or here).
I will say that thread looks odd - normally the mating thread would be much more coarse if it was a standard style connector (see the catalogs for examples). It could be it mates some other way (latch/push-pull?). Be aware these can require expensive crimp tools etc, if the manufacturer sells a cable it may be worth it still.
Normally they will stamp the manufacturer somewhere, I would open up the unit and see on the backside, or there may be a PN listed along the internal flange. If it’s soldered to a PCB you may not be able to see this alas.
EDIT - author double posted and @ToyBuilder already found it in this thread.