Check out this site for 3/16 tube clamps that are insulated and have a 9/32 hole for 20 cents ea for 3/16 and 25 cents for 3/8 thinking about getting them plus some of the double Stainless 3/16x3/16, 3/8x3/8 and some 3/16x3/8. Not sure how many of each to buy. The stainless steel will have to be drilled for a bigger mounting hole. Unless some one has a better source? the web site is Allen Fasteners http://www.allensfasteners.com/sear...$S|$E|DS|DE|TX|Pg&PAGE=2&PageSize=20&sortBy=3
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