What the 3.96mm pitch and 2 positions mean for your board
Two positions loaded means the header is a single-row, 2-circuit interface for a discrete wire pair, common in sensor power, limit switch, or small signal connections where a full multi-pin connector would be overkill.
Gold mating finish and friction lock
The friction lock holds the header mated to the receptacle under moderate vibration — it prevents the wire harness from backing out during machine operation or transport.
