1658694-9 is a universal ejection style pin header with ACTION PIN contacts designed for ribbon cable interconnect applications. It features military, center, and dual polarized configurations with 0.100 inch by 0.100 inch (2.54 mm by 2.54 mm) centerline spacing and a tail length of 0.174 inch (4.42 mm). The connector accommodates 24 positions and is manufactured with gold flash over palladium-nickel plating on mating surfaces and tin plate on the tails over nickel underplate, ensuring reliable electrical contact and corrosion resistance. This pin header is RoHS compliant and is commonly used in ribbon cable interconnect solutions for applications requiring secure, polarized connections with ejection capability for easy mating and unmating operations.