It's a free-hanging (in-line) connector, meaning it terminates a cable and mates with a board-mounted MTA-156 header. The 0.156" (3.96mm) pitch is the standard for this series, giving it a wider spacing than the 0.100" IDC connectors, which helps with routing larger-gauge wire and maintaining clearance in the harness.
No stripping, no crimping — just a straight push with the right tool. The closed-end feature means the back of the housing is solid, so the wire stops at a positive depth and can't push through the back. That's a real help on an assembly line where consistency matters.