You didn't state the diameter nor thread pitch. That could be important.
The "3-letter" identifier on the top, just being stamped there in ink, makes
me think these are common grade from Home Depot. This is how the clerk looks
up the value and uses a printed/book bar code to charge you at the check out
stand. I don't think I would use these on a tower leg.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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