Spring loaded connectors, or pogo pins. A clean solution for home DIY project involving a quick release mechanism with electric connections.
More details at https://mihaidesigns.com/pogo.

Mine are 4mm pitch, can be mounted with M3 screws, and are rated at 9 amps and 1 million mating cycles. I use them in my hot swappable 3D printer extruder https://www.youtube.com/playlist?list=PLTqXGUR7SoBUxGEoz5ruGOa0rZASWMxPU.
Manufacturer https://www.mill-max.com/
Purchase on https://www.farnell.com/ or https://mouser.com/

Make sure you know how to solder and don't risk attempting things you're not trained for. Safety first!


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