The 10.16 mm pitch and 10.16 mm row spacing tell you this is not a signal-density part — it is sized for larger-gauge crimp terminals and the creepage needed at elevated voltage.
Pitch and Row Spacing — Why the 10.16 mm Matters
At 10.16 mm pitch and 10.16 mm row spacing, this housing occupies a board footprint roughly 20 mm wide for the two rows of 6 positions. That is a deliberate trade-off: the wide pitch gives room for high-current contacts and the creepage distance needed at 600 V class ratings typical of the Dynamic D-5200 series. The 2-row layout keeps the connector body compact in the mating direction while spreading the terminal load across the housing width. For the harness builder, the 10.16 mm pitch also means the crimp terminals are large enough to handle 14-18 AWG wire without the insulation crowding the contact beam.
This receptacle housing mates with a Dynamic D-5200 series header of the same 6-position, 2-row layout. The header is board-mounted; the housing terminates the cable side. You should hear the terminal latch click into the retention slot; if it does not seat fully, the pin can back out under vibration. The housing is keyed so the terminal can only go in one way — the polarization rib in the cavity matches the contact's geometry. No secondary lock is listed, so the primary latch is what holds the terminal in service.