window screen pins for patriot series 1900 windows

I actually thought Patriot used clips like our 70-123 to hold in their screens. If you are sure you have pins, then it could be something like our 70-009 or 70-195. I can't really say without seeing what you had installed originally. Would you happen to have any of the originals handy? If not on this screen, maybe on an identical screen elsewhere in the house?