Quick-disconnect receptacle, 0.250" tab width
The 170032-4: Tin-plated brass contact carries the current; the free-hanging in-line body suits harness assembly where a fully insulated housing is not required.
Position within the 250 series
The 170032-4 shares its 0.250" tab width, 0.032" tab thickness, 14-20 AWG wire range, and tin-plated brass construction with sibling 170032-5, 170032-2, and 170032-6 — the only difference is the packaging (Tape & Reel vs Cut Tape) and the order code suffix.
