Go Westy has them. I got tired of my rusty ones too: http://www.gowesty.com/product-details.php?v=&id=3553 

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Jim Felder
Sent: Friday, March 31, 2017 2:40 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Where can I get stainless steel screws for mirrors?

The older style of manual mirrors where you can see the fasteners in the
mirror base.

Thanks,

Jim