10-Position Single-Row Housing for Wire-to-Wire Harnesses
It accepts crimp terminals (ordered separately) and terminates to discrete wires for harness assembly.
The 0.098" (2.50 mm) pitch is a common spacing for mid-density wire-to-wire connectors — tight enough to save board and panel real estate, wide enough to accept 20–24 AWG terminals without forcing a dual-row layout. For a 10-circuit single-row housing, the overall width sits around 25 mm, which fits standard cable clamps and grommets. The pitch also matches the footprint of the mating header's pin field, so the pair mates without side-loading the contacts.
This is common practice for high-volume harness shops that buy terminals in reel form and stuff housings on automated crimp-and-insert machines. For prototype or low-volume builds, order a bag of loose terminals from the same 51191 series to match the wire gauge you are running.