What size glazing?
A quick learner from Turnersville, NJ says:
September 22, 2016
I don't see any readable markings, numbers or names on existing hardware.
Paul from SWISCO responded:
September 26, 2016
I believe your window could be the old Capitol 800 Series window. The snap in they used was our 55-030-6. Could this work for you? Look it over and let me know your thoughts.