St John's Lutheran Church Tilt in window pivots

These pins are from windows produced in the early '60's. They have a nail like metal pin that goes through the "plastic" arm and body pivot arm, supposedly to help with window centering. There are no markings on the pin and none on the window that I could locate.

That looks perfect except it doesn't have the metal "nail like" shaft running through the center of the plastic pin. Is that a separate item or has the designed changed with more advanced materials available today? Thanks

I think these will work. The metal pin looks like original equipment. I was told the metal "nail like" piece that goes through the hole was used for window adjustments and there is a screw that pushes somehow on the flat end (the nail like head)at the end of the plastic pin. If it looks like that "nail like" piece is needed, we can probably substitute a nail. I just need to take inventory of the windows to see how many of these things we might need. Any idea of delivery time?