unknown window top sash replacement

I need help identifying the top sash replacement part on my window. The windows were already in the house and there are no labels as to what brand they are. They are non-tilt. The part needs to be 1" over the top. The sides come up almost wing-like. The screw hole is 5/16" from the top to the center. The box enclosin the screw hole is 9/16" wide.

the length from the top to the angle bottom portio is 1-5/8". The top is offset so I'm assuming they are a right and left set. I have attached pictures so I hope it helps! Thanks for your time!

Kara

also the length of the top part is 1-3/16"