NAMI NFRC 100 casement window hinge

Your casement hinge is no longer available, unfortunately. I suggest taking a look at the 36-021 (you will need two, one for the top and one for the bottom). Also take a look at the 36-004-10 hinge. This is the one that I most often see used in casement windows. It comes as a pair so you only need one. 

Review both types and see which one you think would be better for your application.