12-Position Multi-Lock Plug Housing — 3.50 mm Pitch, Contacts Ordered Separately
The 3.50 mm pitch and 5.20 mm row spacing give it a board footprint that balances current capacity against routing density — wide enough for 20-16 AWG power circuits but tight enough for multi-row harnesses.
As a plug housing accepting female socket contacts, the 917978-1 mates with a male pin header of the same Multi-Lock series, 3.50 mm pitch, 12 positions, 2 rows. The latch lock provides positive retention; there is no secondary locking mechanism on this housing, so terminal position assurance depends on the terminal being fully seated into the cavity until the retention lance clicks.