Circular Connector

  is a type of connector with a cylindrical basic structure and a circular mating surface. In the interconnection classification, it belongs to category 5 and is used for interconnection between devices. Broadly speaking, it includes low-frequency circular connectors, radio frequency coaxial connectors and audio connectors. The cylindrical structure of the circular connector has natural sturdiness and higher strength than any other shape.
  The industry is used in aviation, aerospace, post and telecommunications, computers, navigation and various instruments, meters and other equipment