The Amphenol FCI 68004-231HLF is a 31-position unshrouded single-row header from the BERGSTIK® II series, built on the standard 0.100" (2.54mm) pitch. It carries 5A per contact through gold or GXT™-plated phosphor bronze square pins, with a 110V voltage rating. The through-hole solder tails and push-pull fastening make this a straightforward board-to-board interconnect for prototyping or production runs where a reliable, non-latching header is needed.
The 0.100" (2.54mm) pitch is the de facto standard for breadboard-compatible headers — your board footprint matches the same grid as perfboard, Arduino shields, and legacy 0.1" prototyping systems. The 31-position count is less common than 30 or 32, so double-check your BOM: this is not a miscount of a 30-pin or 32-pin header. All positions are loaded, so there are no blank spots to work around.
Mounting and Mechanical Fit
The mating pin length is 0.318" (8.08mm), and the post length below the insulator is 0.107" (2.71mm) — enough for a standard 0.062" PCB with room for the solder fillet.