I am putting two gusset plates to hold truss supports on my homebrew 30m Moxon.
I'm using 1/4'' X 20 bolts. It's been 40 yr.s since I worked in a machine
shop. Don't have the proper hole size chart for taps anymore. I assume the
hole size to be threaded 1/4 x 20 is less than 3/16''. Anyone have a chart
showing the proper size.TNX
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