Try http://mcmastercarr.com I saw part number 93510A125 that might work. I'm sure they should have something for you.
They have lotts of good stuff!!! Shrinkwrap up the wazoo including adhesive lined and many materials. They also have a HUGE selection of zip-ties. Some are even radiation resistant for nuclear cooling tanks.
________ EXTREME VAPORIZER
Correct:left-hand threaded nuts go on l-h
bolts or studs. When you asked about "reverse thread nuts" I logically thought that's what you wanted was a lht nut.
It sounds like you might mean a "jam-nut" which is nothing more than a thin nut that you tighten down after the first nut. Any decent hardware store should have that.
________ WENDIE 99