5787177-1 is an HD-20 AMPLIMITE Subminiature D connector plug designed for PCB mounting applications requiring reliable signal connections. This connector features 15 contact positions with straight posted ACTION PIN pin contacts and is equipped with fixed female screwlocks for secure mating. Key dimensions include 1.541 inches (39.14 mm) for dimension A, 1.312 inches (33.32 mm) for dimension B, and 0.494 inches (12.55 mm) for dimension C. The contacts feature phosphor bronze construction with gold plating on the mating end and tin on the termination end, with nickel underplating for enhanced durability. This connector is suitable for use with PC boards of 0.093 inches (2.36 mm) minimum thickness and is commonly used in industrial, telecommunications, and computing applications where robust D-sub connectivity is required.