To: | "Tower and HF antenna construction topics." <towertalk@contesting.com> |
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Subject: | Re: [TowerTalk] pipe tap drill size |
From: | DGB <ns9i2016@Bayland.net> |
Reply-to: | "Tower and HF antenna construction topics." <towertalk@contesting.com> |
Date: | Thu, 11 Mar 2010 13:16:08 -0600 |
List-post: | <towertalk@contesting.com">mailto:towertalk@contesting.com> |
#7 drill (.201)- is best. 13/64 (.203) is 2nd best or 7/32 (.218) can be used but treads will be weaker (less thread). de ns9i r miles wrote: > 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@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk > > _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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