Hi! I have ordered from Swisco before, and was really pleased to find that you can supply parts for the vinyl windows at our apartment building. I had to take a sash in for glass replacement, and in the process of getting the sash out, broke the left latches on both top and bottom sashes. Window was tight, very dirty, and plastic was brittle, so I don't know if it could have come out easier. Window company (not the original maker) was unhelpful about the latches, apparently hoping I would order a complete replacement window!
Anyway, it looks like the distinction between your 26-243/44 and 26-419/20 is in the 'tooth' on the underside. However I am finding it hard to see the difference in your photos. It looks like the tooth is the same length but is being measured differently.
In the latch I brought home, as you can see the tooth is partly broken off. That happened when I removed it, as you recommend, with screwdriver and taps from a hammer.
Does the stamped '75' tell you anything about which model it is I need? How about patent # 5,139,291?
When I learn which it is, I'll probably order several pairs just to have backups.
Thank you for having such an amazingly helpful and informative site. I have been looking at your blog entries and am very impressed at the service you provide, so rare with today's throw-it-away attitude.
Looking at photo #3 I can see something almost invisible to the naked eye: there appears to be a score line on the tooth, where it broke off, and the score marks look to be where you're measuring the tooth to. So what I need is likely #243.
