Hello!
It looks like you need a new sash lock. Before I recommend anything, can you write out the distance between the two installation holes, measured from center to center? We have a large selection of sash locks and that should help us narrow down some options.
Thank you!
I'm referring to the two installation holes or screws holes on your sash lock. You'll need to measure the distance between those two holes, starting from the center of each hole. Does this make sense? I'll post the dimensions for our 90-005 down below as a reference so you can see what I mean. The 2-1/4" measurement is the hole center spacing.