There a vendors that have a small bolt with a rounded head that looks like a rivet. They are used to mount the handles and latches on trunks for Model A's and other cars, also used on tool boxes. Basically, bolt and nut as oldford2 described with out any standard slot or phillips slot in the head.Does anyone know any vendors who sell the front door vent window rivets? I need to refinish my window frames and install new vent window seals on my 48 Merc coupe. I have not been able to find a vendor who sells them. My local glass installers are no help at all.