The 1-87221-0: Unshrouded means it mates with a standard AMPMODU Mod II socket housing — no keying or polarization beyond the pin pattern.
Contact finish and field replacement
The post length is 0.125" (3.18mm) — short enough that board thickness and through-hole plating must be checked for solder-joint reliability. The circular pin shape is standard for AMPMODU Mod II.
