Hello. I have difficulty to buy this DC connector because I don't know its exact description, model or part number. Can someone help me what is its exact name, model and part number? Where can I purchase it?

Thank you.

 

Have you tried the manufacturer?
Food for thought: https://uk.rs-online.com/web/c/connectors/mains-dc-power-connectors/dc-power-connectors/
Good luck..

 

They do exist by some name; Do you want the male or your shown female; is it threaded ? Is there a insertion key ? Tell the dimensions of everything on it.



If I was in your shoes, would not hesitate in replacing an original unobtanium connector/jack with something widely available. Even running wires to a workable in-line jack instead of a goofy align-polarity-with-the-red-dot...