The 0.100" pitch and 0.128" (3.25mm) post length are the two dimensions that determine the PCB footprint. The post length is on the shorter side for a through-hole header — it suits boards around 1.6mm thick where the solder tail does not need to protrude far past the bottom side. The overall contact length of 1.058" (26.87mm) includes a 0.830" (21.08mm) mating pin section, which gives good reach for mating with standard BergStik receptacle housings.
The base product number is 87916, which covers the full BergStik II header family in this pitch and row configuration.
