The 770827-1: A detent lock holds the mated pair against vibration without a secondary latch.
What it mates with and what contacts it needs
This is the plug half — it mates with a Commercial MATE-N-LOK receptacle housing of the same 0.200" pitch and corresponding position count. The housing itself ships without contacts (the listing note is Contacts Not Included), so the build requires the matching female crimp terminals from the same series. Free-hanging (in-line) mounting means the assembly floats in the harness, not on a panel or board.
