You may be able to find something that would mate with either end from one of the big distributors, like Digi-Key or Mouser, etc. As Dave stated, most manufacturers tend to use their own spec on connectors to keep people buying new stuff.
Just out of curiosity, what kind of device is this?
You can probably find something that would work out there somewhere, especially if you have a half-way decent set of calipers to measure with.
Good luck and good hunting
Matt-