The FCI 68697-452HLF is a 52-position unshrouded male pin header from the BERGSTIK® II series, designed for board-to-board interconnect on a standard 0.100" (2.54mm) square grid. It carries two rows of square pins on the same 0.100" row spacing, with all 52 positions loaded.
The 0.100" (2.54mm) pitch is the de facto standard for this class of square-pin header — it matches legacy 0.100" grid prototyping boards and most IDC ribbon cable receptacles. The 52-position count is the full complement across two rows, so the BOM line is a direct match for a 52-circuit board footprint.