Board-fit and footprint check
The 966269-5: Surface-mount termination means the header sits flat on the board with no through-hole stubs; the insulation height is 0.110" (2.79 mm) above the PCB, keeping the z-height low for tight enclosures.
Contact interface and mating cycles
Mating pins are gold-plated at 3.90 µinch (0.099 µm) over phosphor bronze — a light flash that handles moderate mating cycles (50–100) in clean environments; for high-cycle or corrosive duty, a thicker gold is preferred. Mating pin length is 0.228" (5.80 mm) — enough to engage a standard receptacle contact without bottoming out.