Packaging for this item is MIL SERIES CONNECTOR.There is a mounting type of BOARD AND PANEL for this device.Moreover, there are a number of other features, including STANDARD: MIL-DTL-38999, EMI SHIELDED, POLARIZED, to name just a few.
D38999/21HG11CC Features
D38999/21HG11CC Applications
There are a lot of TE Connectivity Deutsch Connectors D38999/21HG11CC Circular Connectors applications.