This series of connectors is an alternative solution to Lemo connector which are used in medical, industrial, audio/visual, telecommunications, military, scientific research and measurement applications.
HR connectors are a lower-cost version, yet still provide a high "Value Add" while preserving the superior characteristics of the HR connectors. Cable clamps are crimped using a special crimping tool, and the shells have a rubber boot which provides a flexible design that helps to prevent cable twisting.
Aviation connectors, also known as military plugs, is aviation connector, i.e., cable connector. The number of cores is different, and the size is variable. But basically, they are metal housings with screw fasteners for the plugs and sockets. They can be fixed and secured when connected and will not come off.