The 747852-4 is a subminiature D-type right-angle receptacle connector designed for 478 board mount applications with front metal-shell construction and fixed female screwlock. It features 9 contact positions with a shell size of 1, accommodating size 20 DF posted socket contacts preloaded in the housing. The connector is constructed with a steel tin-plated front shell, 94V-O rated thermoplastic black housing, brass tin-plated eyelets, and zinc threaded inserts, with socket contacts made of phosphor bronze featuring duplex plating (0.00076 inches gold on mating end and tin-lead on termination end with nickel underplate). Key dimensions include a shell length (A) of 1.213 inches (30.81 mm), width (B) of 0.984 inches (24.99 mm), and post diameter of 0.026 inches (0.66 mm). This connector is ideal for applications requiring reliable interconnection in compact spaces with secure board mounting through integrated boardlocks and threaded inserts.