The 1-747299-4 is an AMPLIMITE HD-20 subminiature D-type receptacle connector designed for secure PCB mounting with fixed female screwlocks. This connector features Shell Size 2 with 15 contact positions and is equipped with size 20 DF posted socket contacts preloaded in the housing. The connector body is constructed from 94V-0 rated thermoplastic (black) with a steel shell that is tin-plated, and includes zinc female screwlocks for reliable mating. Socket contacts are made from phosphor bronze with contact finish code A, featuring 0.0076 inches of gold plating on the mating end and tin-lead plating on the termination end, with a minimum 0.00127 inches of nickel underplating throughout. The connector dimensions are 1.541 inches (39.14 mm) in length and 1.312 inches (33.33 mm) in width, with a post length of 0.125 inches (3.18 mm) recommended for PCB thicknesses of 0.062–0.083 inches. This connector is ideal for applications requiring robust, subminiature D-type connections in compact electronic assemblies where secure locking and reliable signal transmission are essential.