749721-7 is a 68-position AMPLIMITE .050 Series vertical receptacle header with through-hole tails and latchblocks, part of the Series III subminiature D-type connector family. This connector features a thermoplastic housing rated 94V-0 and SMT compatible, a bright nickel over copper plated steel shell, and phosphor bronze contacts with duplex gold plating on the mating end and tin-lead on the solder end. Key dimensions include L: 2.280 in (57.91 mm), M: 2.115 in (53.72 mm), P: 1.650 in (41.91 mm), and R: 2.515 in (63.88 mm). The connector includes 2-56 threaded holes for secure mounting. Ideal for high-density interconnect applications requiring reliable signal transmission and robust mechanical performance.