Will #26-410 work for my windows?

Thanks for posting. The 26-410 has a hole spacing, or the distance between the center of each mounting hole, of 1-13/16". Please measure the hole spacing of your old tilt latch. If it differs, let us know how. Also consider the 26-337 or 26-078 & 26-079. See if either of these pairs have dimensions that match what you need. 

If that is the exact hole spacing you need, then the 26-410 does make the most sense. I don't think the difference in width is necessarily going to be an issue, since the centerline of the tilt latch will remain the same. I am a little concerned that the latch shape will work the same way. Also you want to make sure the backset of the first mounting hole from the edge of the lock body is the same--for the 26-410 it's 23/32". If it's a different distance for your old lock, then it's not going to work right. Let me know what you find.