The D-Sub Connector M 3W3-09692100033 is a Coaxial Connectors . Coaxial connectors or coax connectors are situated at the ends of coaxial cables and are used to connect coaxial cables to other devices. Technically there are two different connector formats, male and female. Male connectors have a solid pin for a center conductor, while female connectors have a center conductor with a hole in it to accept the male pin. Depending on industry and intended applications, there are several varieties of coaxial cable connector types, like BNC, TNC, 7/16 DIN, QMA, MCX, RCA, but all of them are designed to maintain the shielding across the connection.