Technical 40 ford cowl vent washers

The original cowl vent pivot washer are cross cut / knurled / serrated? Has anyone used some other washer in place of the originals. Or what is the correct term for the washers and are they available. Maybe someone has some extras.

Thanks, Tony

 

Bob Drake part O1A-426-HK

 

I used common everyday flat washers when I built both my 40 sedans and that's what I used on all my Deuces,the ratchet bar holds everything in position. HRP