I can't seem to find an exact match. This is from a General Aluminum window. It's one inch tall. The hole is approximately 3/4" from the bottom. There are no markings/part number on the piece.
Paul from SWISCO responded:
May 11, 2020
The closest pivot bar that we were able to find was our 26-361. It's not exactly the same, but look it over and see if you can use it.