Push out window hardware
A quick learner from Hiram, Maine says:
March 24, 2016
Peacock, LH opener for a hexagon-shaped window in a ~30 y/o home
Tom from SWISCO responded:
March 25, 2016
I'm not sure if we will be able to help. Hexagon windows tend to have very specific hardware. That said, if you were to take some pictures of the part in question, we would try our best to find you a match. I would also need your dimensions.