It sits on the standard 0.100" (2.54 mm) pitch, matching the legacy DIP grid — drop it into a perf-board or a 0.100"-spaced PCB without a custom footprint. Through-hole solder termination keeps the mechanical pull strength high; the 0.225" (5.72 mm) post length gives enough tail for a standard 0.062" board with room for a through-hole wave-solder fillet.
Rated 5 A per circuit at 110 V, with tin-on-tin contacts — 100 µ" (2.54 µm) tin on the mating side, tin on the post. Tin is a work-hardening finish: it wipes oxide on first mate but wears through after roughly 50–100 cycles. This header is built for a one-and-done or infrequent-mate board-to-board connection, not a daily-disconnect harness. The 31-position count is an oddball — not a standard 30 or 32 — so confirm the BOM line position count before committing the footprint.