It carries a 0.138" (3.50mm) pitch with a 0.181" (4.60mm) row spacing, and the housing is keyed by the latch lock mechanism to prevent mismating. The black housing includes a Terminal Position Lock (TPA) notch — a secondary retention feature that confirms each crimped terminal is fully seated before the connector is mated.
Termination and Contact Note
The TPA notch in the housing accepts a separate Terminal Position Assurance (TPA) retainer (sold separately) that locks each terminal in place — critical for harness builds that see vibration or field service where a backed-out contact would open the circuit.
This receptacle mates with the Ultra-Fit male header (plug) of the same 172258 series with matching 6 circuits and 3.50mm pitch. The free-hanging (in-line) mounting style means it is wired into a harness and not board-mounted, so the strain relief comes from the crimp and TPA, not a board anchor.