Screen lock, removed from window

I strongly believe the clip you show in your photo was only used for a short period of time on window screens. I am not a 100% certain on what to recommend as a replacement. Start with looking into our 70-020 or 70-073 screen clip. See if you believe you can adapt either one of these pieces to fit to your window screen. Perhaps if we can have you send us some photos of the screen installed in the screen, maybe we can come up with a suitable solution.