Contact finish and reconnect duty
The 75867-312LF is the 12-position dual-row member of Amphenol ICC's Quickie shrouded header line, terminated through-hole right-angle.
Shroud and keying
A 4-wall shroud surrounds the pin field, and a keying slot on the shroud wall prevents mating with an incorrectly oriented or non-keyed receptacle — the header only accepts the mating half one way.