The Amphenol FCI 95687-426HLF is a 26-position, dual-row unshrouded BergStik® II header on a 0.100" (2.54 mm) pitch — the standard grid for prototyping and legacy board layouts. It's a through-hole male pin header, push-pull latching, with all 26 positions loaded.
Rated 5 A per contact at 110 V — the 0.100" pitch gives enough creepage for the 110 V rail without forcing a wider board footprint. The 0.360" mating pin length and 0.360" post length (0.820" overall) are standard for a 0.062" board with a 0.100"-thick mating header; the post length drives the through-hole solder tail reach for the PCB thickness you're working with.
Termination is through-hole solder, so the board gets the mechanical anchor of the plated-through holes.