I was curious and found this.
Taco sells the same tower that Wade did as Delhi
The install instructions for Taco DMX are here
http://www.tvantenna.com/products/tvreception/mounting/towers/taco/dmx/DMXinstructions.pdf
They show bolts facing in, with a single washer at the nut, (not split
lock washer, a star lock washer with internal teeth.
They say "All bolts and nuts are specially heat treated"
and "These special heat treated bolts have solid shoulders in order to
prevent the tower sections from shifting. Tighten the nut securely, but
be careful not to strip the threads".
If the nuts and bolts are heat treated, they must be at least grade 5?
Doesn't say if galvanized.
1/2" diameter x 3/4" bolts on bottom sections. 3/8" x 5/8" for upper
sections
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