This is the replacement threaded shaft for the Airstream window latch (VTS-1094) that we carry. In many cases, the purchase of this part can repair your latch without needing to replace the entire latch.
It is approximately 2-3/8" long and 5/16" diameter.
Generally used on 1969 and later Airstreams.
In the photo with the red arrow, the arrow indicates the part. The rest of the latch is shown for context only.