A simple two pin wire-to-wire connector is probably the RCY series. When a connector interface two or more wires to a circuit board instead, it might be one of the following series. A quick way ...

Circuit-board connectors have a variety of contact styles ... Most versions use an 0.025-in. square pin and mating receptacle arrangement. Low tolerances minimize mating forces.

It is “easy to align the launch pin with the circuit ... or angled launch connectors.” Connectors can be attached, removed, and reattached to the PCB up to 500 time without damaging the PCB, it ...

The problem is well-known: programming and debug headers consume valuable board space and the connectors cost money. Especially troublesome are the ubiquitous 100-mil pin headers, not because they ...