Lock and Keeper

I was not able to cross reference any window locks based on the stamping you gave us. We would need for you to get back to us with the screw hole measurement of both the lock and keeper along with the back set measurement. In the meantime, you can start with taking a look at our 90-161 and 90-316. See if either of these look like a match for your part. 

Take a look at the diagram below and use it as a guide when measuring your part. 

Detail of 90-161

Dimensions for 90-316

These locks are not standard, no. There are a dozen different types and they all have different hole spacings. It's a vital dimension.

I would triple check your measurements just to be sure. Make sure to measure from the center of each hole, not their edges. That may account for the subtle differences.

Yep, that would be our 90-316, which Paul linked to in the first response to this thread. You can visit its store page for all the information you need.