Summit Racing Supply has good steel and stainless steel U-Bolts with double
edge saddles. I would replace the standard nuts with elastic stop nuts for
antenna use. Their online catalog sometimes gags so you might want to just call
them. I've received solid service from Summit.
http://www.summitracing.com/
1-800-230-3030 or 1-330-630-3030
The following part numbers may be useful:
Summit Stainless U-Bolts (muffler clamps)
SUM-G4720 2.00" U-Bolt, 3/8" thick $5.99
SUM-G4722 2.25" U-Bolt, 3/8" thick $6.39
SUM-G4725 2.50" U-Bolt, 3/8" thick $7.99
SUM-G4730 3.00" U-Bolt, 3/8" thick $10.39
The plain steel units are SUM-G46xx and cost is $1.69, $1.99, $1.99 and $2.99
for the sizes above. Note that these come coated in light oil and once that is
removed they will rust immediately unless treated.
For smaller u-bolts without saddles McMaster-Carr is a reasonable mail order
source. http://www.mcmaster.com/
TowerTalk regular W7NI offerers mechanically galvanized steel u-bolts with
saddles. Stan's hardware page link is:
http://www.reprise.com/antronics/antronics_hardware.asp
Best,
Mark
KI7WX
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