The closed-end housing prevents the cable from being pushed through, and the polarizing key ensures the connector can only be mated one way — a practical guard against miswiring on the line.
Wire Sizing and Termination
This IDC receptacle is factory-set for 22 AWG wire — no stripping, no crimping. If your harness calls for a different gauge, this specific part won't work; you'd need the MTA-156 variant for that wire size.
Mates with any standard MTA-156 header (through-hole or vertical) that shares the same 0.156" pitch and 10-position count. No secondary latch or screw lock — the ramp is the primary retention.