Quarter window guide rivet

[Dinocasino]

After a few searches and what turned into hours reading threads I'm still having trouble locating a part number for the rivet that holds on the slide guide for the rear quarter window on a 70 convertible. Please see below for pictures, and this would be item number 5 in the parts catalog. Of course there is no PN listed. Have any of you guys replicated this rivet before?