After I read the Thread title, I was going to say, No problem.
A friend with weed, is a friend indeed.
Thats a tricky quick release pin.
As someone mentioned, the actual inside thread on the insert may be a common one, 5/16th x 14 for example.
But either way, even if it is, it would make it an easier task to find a shaft but the end result would be that it will be more than likely necessary to have the pin changed out to a common thread.
That said, a pretty quick and inexpensive task for any repairman. An import and ya know what, the thread could be almost anything but what we commonly use in North America.
And just saw that KJ pipped my post. He knows what the skinny is. A good guy to deal with either way.