The 0.100" pitch is the de facto standard for 0.025" square-post headers — the board footprint is well-established, and the 26 positions fill a 13-pin-per-row layout.
As an unshrouded header, the 86832-126HLF mates with any standard 0.100" pitch dual-row receptacle housing that accepts 0.025" square pins. Common mating halves include FCI's own DUBOX or BERGSTIK receptacle series, as well as industry-standard IDC sockets and crimp housings from multiple manufacturers.
