The 172487-3: That pitch is common for wire-to-board applications where the board space is tight but the wire gauge stays in the 22–26 AWG range — the 2.50 mm spacing gives enough room for a reliable solder joint and a positive housing lock. Rated 2 A per contact at 250 VAC / 350 VDC, with tin-on-tin plating at 31.5 µin on both mating and post sides.
Board-to-cable wiring with a detent lock
The connector style is Board to Cable/Wire — it mates with a crimp-style receptacle housing (not a board-to-board mezzanine). The single-wall shrouding and detent lock keep the pair engaged against light vibration; for heavy shock or high-vibration environments, a full-wall shroud or a locking latch would be more secure.
No stock-holding claim; availability is verified per order.