The Amphenol BERGSTIK II 68022-426HLF is a 26-position, 2-row unshrouded male header on a 0.100" (2.54 mm) pitch.
The 0.100" pitch is the standard 2.54 mm grid — it matches the vast majority of 0.100" female socket strips and perf-board patterns. The 26 positions, all loaded, fill a 26-circuit BOM line exactly; the 2-row layout means a 13 x 2 footprint. The 110 V rating is a conservative limit for the 0.100" pitch in a clean environment; creepage and clearance are adequate for most logic-level and low-voltage power circuits.
This is a general-purpose board-to-board header for internal, unsealed assemblies — think test equipment, industrial control boards, telecom line cards, and consumer electronics where the connector is inside an enclosure.