745996-4 is an AMPLIMITE subminiature D-type receptacle connector designed for reliable board-to-board or cable-to-board interconnections. This shell size 4 connector features 37 contact positions with size 20 DF posted socket contacts, preloaded and duplex plated with gold (0.0076 mm) on the mating end and tin-lead on the termination end with nickel underplating. The connector includes threaded inserts and a steel tin-plated front shell with 94V-0 rated thermoplastic housing. Key dimensions include A dimension of 2.729 inches (69.32 mm) and B dimension of 2.500 inches (63.50 mm), with a post diameter of 0.026 inches (0.66 mm). This connector is ideal for applications requiring secure, high-density connections in industrial, telecommunications, and computing equipment.