Window cleaners broke one of my screen retainers. Marvin Integrity 2009-10. Similar to your 70-219 but doesn't have the external ring on the plunger and the end is not tapered. The pin is white with a clear cap.
Emily from SWISCO responded:
June 22, 2022
Hi there!
Start by taking a look at our 70-008 and 70-009 plunger pins. Compare our dimensions with yours to see if one of these matches up for what you need.