4-Position Economy Power 2.5 Plug Housing, 2.50mm Pitch
The 1744417-4: It's a free-hanging (in-line) female socket housing that accepts crimp terminals — the contacts are ordered separately. The latch lock on the mating face gives a positive audible click when seated against the matching header, holding the pair together under vibration without relying on the terminals for strain relief.
What You're Actually Buying — Housing Only
The listing note is straightforward: contacts are not included. The 1744417-4 ships as an empty housing. You'll need the matching Economy Power 2.5 crimp socket terminals — typically ordered as a separate line item — and a hand or auto crimp tool for the wire gauge your harness calls for. The housing itself is a single-row, 4-way natural nylon body with a latch lock on the top. It mates with the corresponding Economy Power 2.5 pin header (through-hole or surface-mount, depending on your board layout). The 2.50mm pitch is tight enough for a moderate-density wire harness but still leaves room for 18-22 AWG terminations without crowding the wire barrel.