5748146-6 is an HD-20 AMPLIMITE Subminiature D connector plug designed for PCB mounting applications. This shell size 3 connector features 25 contact positions with straight posted ACTION PIN pin contacts and fixed female screwlocks for secure mating. Key dimensions include 2.088 inches (53.04 mm) for dimension A, 1.852 inches (47.04 mm) for dimension B, and 0.494 inches (12.55 mm) for dimension C, with contact finish plating code A (gold flash on mating end, tin on termination end with nickel underplating). The connector is preloaded with straight posted ACTION PIN pin contacts and uses male screw retainers as mating hardware. This RoHS compliant connector is ideal for applications requiring reliable high-density interconnections in electronic equipment.