Window locking arm
It sounds like you might need a keeper, but I'm afraid I can't determine that based on these photos. Would it be possible to see a photo of the part in question? At the very least, I need to see the back side of the lock to see what kind of locking arm it uses. There are many, many varieties of this style of lock, so I can't make a recommendation based on just the interior lever.
Thank you! The closest match I was able to find to your older style lock assembly was our 38-036. This may even be a more modern version of your part, but look it over and see what you think. This is available in a black finish.
Great! Glad they match.
Concerning this screen clip, we don't sell this exact style but we sell a ton that can likely work instead. These are very simple parts so they don't have to be an exact match, you just need to make sure the offset is right. See our 70-209 for one example, though you'll have to check our measurements first. You can also see our full selection here.