745968-4 is an AMPLIMITE HD-20 subminiature D-type connector plug designed for PCB mounting applications. This shell size 3 connector features 25 contact positions with size 20 DF posted pin contacts, grounding indents, threaded inserts, and retention capability. The connector has dimensions of 2.090 inches (53.09 mm) length and 1.852 inches (47.04 mm) width, with a post length of 0.125 inches (3.18 mm) recommended for PCB thickness of 0.062-0.093 inches (1.58-2.35 mm). The shell is constructed from tin-plated steel, with a 94V-0 rated black thermoplastic housing, brass threaded inserts, and brass pin contacts with gold plating on the mating end and tin-lead on the termination end with nickel underplating. This connector is ideal for industrial, telecommunications, and computing applications requiring reliable high-density interconnections.