Simon case window

It sounds like a kind of pivot bar, but that's just a guess. In order to confirm what you have, please remove an undamaged version of the part in question from the window and show us a clear picture of it without obstruction. Thanks!

Thanks! I was way off. This is a hinge, but fortunately that's a lot easier to identify. I recommend the 36-048. This isn't exactly like your original, but it should still work as long as you replace the top and bottom at the same time.