top tilt corner latch

Some of my smaller aluminum windows 2' x 2' have this upper corner latch (see photo). The windows are 40 years old. Total height of the latch is 1 1/2", and width is just under an inch. The stem that slides into the side frame channel and attaches with a metal screw is exactly 1/2". If this latch is not still available what else might work? On other windows with the same frame, I'm using your 26-157 LH and 26-158 RH.

Perfect. I'll place an order. Thanks much, Emily.