The 0.098" (2.50 mm) pitch keeps the footprint compact while leaving enough room for 20–24 AWG terminated contacts.
The 4-position 1376477-4 sits at the lower end of the range — a common count for sensor connectors, small power taps, or signal breakouts where the circuit count matches the position count exactly. Against the 2-position variant, the 1376477-4 adds two cavities without changing the housing width per row, so the board footprint scales linearly with the position count.
The latch lock engages audibly on full mate. Free hanging (in-line) mounting means no panel cutout is needed; the housing simply sits in the harness run.