<VV> Chrome door windor fastener source?

[Kirby Smith]

On my 66 Corsa Coupe the door window mechanisms are retained, in part, 
by chrome hardware at the door ends.  There are two chromed machine 
screws (in two sizes) with integral washers and a chromed nut with large 
integral washer.  Some of mine are rather ratty.  I don't see any listed 
in the catalog of my nearest vendor, Clarks, only the mylar washers used 
with the screws.

Anyone know of another source?  Thanks in advance.

kirby