This is a board-to-board style header, but its unshrouded pins also work in wire-to-board applications when paired with a female crimp housing. The 27-position count is less common than 26 or 28 — verify your mating half has exactly 27 cavities before committing the BOM line.
Overall contact length is 0.425" (10.80 mm).
The contact base is phosphor bronze, which provides good spring retention.
