http://www.msc-stainless-fasteners.c...are-nuts-title
http://store.nutsandbolts.com/square-nuts.html
....and Valley Hardware has in stock 5/16 square....plain or plated 100 for $10
3/16 or 1/4 20 could be ordered.....
Over an out..... I need to spend more quality time in the barn with you guys....
BooBee
PS ...talk to me about the plate...... I have repaired old soft pewter items before in my younger days....... you just need to be delicate and fabricate your own tools out of wood for correcting the dents........ we may have to be creative for the actual finish...... a couple of beers will do wonders....