The TE Connectivity 1717103-2 is an 8-position, 2-row plug housing from the 0.64 series, designed for free-hanging (in-line) wire-to-wire or wire-to-board harness applications. It uses a 2.20 mm pitch between contacts and a 3.00 mm row spacing, which sets the footprint for the mating receptacle and the crimp terminal layout.
This is the most common sourcing miss on this part.
Pitch and Row Spacing Drive the Mating Half Selection
The 2.20 mm contact pitch and 3.00 mm row spacing are the critical dimensions for selecting the mating receptacle. A receptacle with a different pitch or row spacing will not align. The 0.64 series includes a 30-position receptacle (1-2333134-5) that shares the same locking ramp and 2-row layout but uses a 2.00 mm pitch and 3.30 mm row spacing — those differences mean it is not a direct mate for this 8-position plug. Stick to a receptacle within the same 0.64 series that matches the 2.20 mm pitch and 3.00 mm row spacing.