Go to ace or homedepot they are called grub screws. At home depot they have a special selection in a big metal box go to the green one whihc is stainless and look in there. I have seen them so I know they have them, grub screws remember... Polo..
I've looked.. the only screws the have go from 4,5,6,8mm ... 7mm is left out. This includes stuff like torx screws, allen screws, ect. All they have is 7mm hex bolts. Never heard of grub screws.. reminds me of the grub worm
Positive.. It is a 7mm. Brought the set screws with me and everyone that tested them had a 7mm nut fit perfect. I can't even find them on the net.. I'm desperate! Anyone have some dead amps laying around? I'll buy the set screws if they are 7mm!