>>1492656Basically yes, but how exactly depends on the type of stem you have.
https://www.youtube.com/watch?v=yM90mfrjkUAhttps://www.youtube.com/watch?v=TPYGv6fMnBwAlso if it came loose in transport and it wasn't undone on purpose there was something wrong; pic related is the likely culprit in the case of a quill stem.