Are RNJ connectors derived from the MIL-DTL-38999 standard ? What are the similarities?

RNJ is derived from the D38999 series I and is HE308 qualified. Some components used in RNJ are similar to the ones used in LJT – D38999 series I, such as the contacts and the inserts.
RNJ connectors accept all 38999 series I and series III inserts. The RNJ Jam nut receptacle is fully compatible with a 38999 series I or LJT 06 plug.  
To learn more about Rack and Panel RNJ connectors, check out our 3D video.

Content réference
RNJ - Rack & Panel
RNJLP - Rack & Panel Low Profile