1658538-1 is a D-subminiature cable connector from the TE Connectivity AMPLIMITE HDP-20 series, designed for crimp snap-in contact applications. The connector features a steel tin-plated shell and a 94V-0 rated thermoplastic black insert, providing reliable shielding and flame retardancy. It utilizes standard clinch nut mounting and is intermateable with size 20 D-subminiature connectors complying with MIL-C-24308. This connector is commonly used in industrial machinery, medical instrumentation, computers and peripherals, and data storage systems where reliable signal connections are required.