So one of the knobs on my FMR RNP is has gone into the aether. I've sent an email to FMR, but have yet to hear back. Probably have to call during the week. Does someone know of a good source for small quantities of electronic parts? I've tried searching but I'm probably using the wrong name for what I'm looking for. These are 1/2" diameter knobs with a set screw on the side. They fit on a 1/8" shaft that has been ground flat on one side. The shafts are from a step pot and take a reasonable amount of torque to turn (Hence the tendency of the set screws to come loose.) Is there a more specific name for these things than "electronics knobs"? (Of course, a general search on "knobs" can keep a person busy for a long time.)

UPDATE: 1/8" bore set screw knobs seems to be the correct term. A pointer to a reliable supplier would still be appreciated.