The 0.156" (3.96mm) pitch sets the PCB footprint and the per-contact current ceiling — with the current rating varying by wire gauge, the 3.96mm pitch allows heavier wire than finer-pitch headers.
The 0.425" (10.80mm) insulation height and 0.400" (10.16mm) mating contact length set the engagement depth; confirm the receptacle's cavity depth for full insertion.
