Seth,,, I have at least two dozen mirrors OR MORE here as started collecting them a long time ago. All FORD and also FOMOCO. Also, many of the vintage wind wings for them. BTW,,, they polish up extra nice as in the ones in the pics. I have seen and still have a large box full of mounts of all kinds, however,, back to some ancient posts,,,,, LOL
The "THIN METAL WASHERS" are actually drilled and tempered metal. Stainless material for the full Fomoco units and metal for the metal mirrors.
THEY DONT STAND UP, BREAK AND I HAVE NOT FOUND ANY REPLACEMENTS for over ten years now. Regardless,,, I DONT USE THEM,,, LOL,,, not yelling, just saying,,,,
The original mirrors were not at a 90 degree to the floor of the truck and here is a mod that I have been using for many years..
I took a level and put it on the dash of the truck and leveled the truck exactly from left to right so that I had something to measure from that was equal. Then I used a level on the vertical bars and found that they are actually 1 1/2"s out of level vertically. Its been many years so that may not be exact or correct but still my point......
On the top of the mirror post there are two rivets (actually the locators that index in the tempered washer) the idea being that you can move the mirror arms to retract them, however they forgot the fact that the lower bolt is tight and fights the movement. Those thin locating washers are tempered and are ALWAYS BROKEN. In over twenty years I have exactly ONE that isnt!!!
SO, my soloution is this,,, remove the two locating rivets in the top and cut the end off just outside the bolt hole. Now re drill a new hole in the other rivet location. This moves the upper part of the arm inwards the exact amount for the mirror arms to now sit exactly plumb vertically.....
DONT USE HOME DEPOT acorn nuts,, THEY RUST....(the rusty ones in the picture) I have a surplus source here that sells full stainless acorns that are colored black by the lb. It polishes off very easy and the nuts are high quality stainless that WILL NOT RUST. GOOD QUALITY acorns are about $2 each!!! times twenty pieces,,,, as in OUCH!!!
Also, I bend the tabs so that they lay flat and straight outwards. Also,,, I use brass toilet seat bolts for the upper studs as they sit right under the door gasket and work perfectly. the pictures of the mirrors are over ten years old and have never been touched since I polished them!!!!!
VicSoCal