It is not a connector, or Molex.
Note first,
Molex is just a brand or company name. While the word "molex" has become synonymous with certain types of connectors, it is similar to the word, "Kleenex". That is a brand name but has come mean any "tissue". "Hoover" is another. "Hoover" is a brand/manufacturer of vacuum cleaners, but in some countries, the UK for example, it is just a noun for all vacuums. They even use it the verb form, "hoovering", to mean the action of vacuuming. Google is another. "Google it" does not necessarily mean to use the Google search engine. It just means to go look it up on the Internet.
That device is a spring-loaded (or tension) "contact", typically found inside connectors such as a microphone or headphone jack connector. The part you are looking at would be the Tip or Ring contact as seen below.
I would not even try to find an exact replacement for that contact and instead would just replace the whole connector.