The 964739-1: It uses a latch-lock fastening system to hold the pair mated under vibration, and the two-row layout keeps the harness bundle manageable for a 24-way run. This plug is designed for free-hanging (in-line) applications, typical in automotive, industrial equipment, and appliance harnesses where a rugged, field-serviceable interconnect is needed.
Termination is crimp-style: you insert the tab contact into the cavity, and the housing's primary latch holds it. The glass-filled PBT body handles the crimp insertion force without cracking, and the 2-row cavity arrangement is keyed to prevent mis-insertion.