The 5-103168-7 is a vertical through-hole header from TE's AMPMODU Mod II series, with 18 male pins arranged in two rows on a 0.100-inch (2.54mm) pitch. No secondary lock or screw-down — the detent is enough for a panel that doesn't see continuous shock.
Pitch, footprint, and the mating half
The 0.100-inch (2.54mm) pitch and 0.100-inch row spacing are the standard AMPMODU Mod II grid. Any AMPMODU Mod II socket with 18 positions and the same pitch will mate — the shrouding ensures the keying is correct before the pins engage. The 0.125-inch (3.18mm) solder tail length suits standard 0.062-inch (1.6mm) PCBs. Tin-plated solder tails (100µin) match the thermal profile of lead-free reflow or wave solder. The gold-plated mating face is the interface that matters for reliability — the tin tail is a cost-appropriate choice for the solder joint.