They are the Upper Windlace Retainer Screws.

Here's one from Classic Truck Parts and an original.
Attachments
Upper Windlace Screws 1.jpg (112.16 KB, 143 downloads)
Upper Windlace Screws 2.jpg (83.2 KB, 136 downloads)


Andy

His: 1947 Chevrolet 3104
Hers: 2008 American Saddlebred

"I proudly Stand for the Flag and Kneel for the Cross" Unknown