Try Window Screen Hardware on Amazon and Ace Hardware.
I would check amazon.com as they seem to carry a little or a lot of almost everything.
you could take it to home depot or lowes and they may have one to match yours
here is some more info I found for you
Thank you Em and Mogie. I have already checked Amazon but will double check again.
Thanks for link Cheryl.
Check out Lowes, Home Depot, Menard's, or Ace Hardware. They may be proprietory to the manufacturer of windows and you may need to go to them
This place has all sorts of clips
If you go to Home Depot they can usually order a custom part for you from their window department if they don't have it on the floor.
Do you have another screen with a clip that's the same? It's usually easier to match one at a hardware store if you can show them what you need. Good luck and stay safe!
Yes I do...just about 35 other windows:-). Will check with local stores in person.
Thank you and you as well.
If you show someone at Home Depot, they may be able to help, if they have them.