I'm looking for a female xtensions connector that I can screw down. (The whole connector.) I'd like to put the blackbox, power supply, and PC in a single box and put the connectors on the exterior of that box.
So I found these ... US $2.59 9% OFF|5Sets 3.81MM pitch Through wall plug in terminal blocks 15EDG 3.81 2/3/4/5/6/7/8pin Plug + Pin Header Socket set|Connectors| - AliExpress
Ohhh, those are nice. I think I mostly use 5.08mm terminal plugs, maybe a few ~2.8mm-ish, but I'll have to keep an eye out for panel-mount versions of whatever I have.