Pitch, Positions, and Board Footprint
The 2-1761679-5: The 0.165" (4.19 mm) solder tail length suits standard 0.062" (1.6 mm) PCBs — the post protrudes enough for a clean solder fillet without bottoming out on the board.
Keying Slot and Shrouding
The keying slot in the housing prevents insertion of a non-keyed AMP-Latch receptacle — a simple mechanical polarisation that stops a 180-degree reversed mate or a wrong-series cable assembly from being forced in. The 4-wall shroud fully encloses the pins, protecting them from accidental bending during handling and providing a rigid guide for the receptacle alignment.
No official cross-reference or second-source equivalent is listed by TE. The 14-position, 0.100" pitch, keyed AMP-Latch form factor is specific to this part number — confirm the mating half and board footprint before substituting.