[TowerTalk] pipe tap drill size

[Rappe, Jim]

A No.7 size is what you are looking for.

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of r miles
Sent: Thursday, March 11, 2010 1:06 PM
To: antennas; towertalk
Subject: [TowerTalk] pipe tap drill size

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
K9IL
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk