It carries a 0.264" (6.71 mm) pitch — noticeably wider than the 0.100" or 0.156" pitches common in this class, which means the terminals it accepts are physically larger and can handle heavier wire gauges.
Sizing the Harness — Contacts and Mating Half
For the mating half, this plug housing mates with a 3191-series receptacle header — same 6.71 mm pitch, same 2-row layout.
Panel Mounting and Retention
The panel cutout must match the 3191 series footprint; the snap-in feature holds the housing in place while you mate the receptacle or dress the wires. The locking ramp adds vibration resistance once mated, so the pair stays together under the kind of shaking you get in a forklift or a conveyor drive.