<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Absolutely agree Harold however, just to complicate issues with Mike's generator pillar his is for a 100 and the threads are BSF. You can see the difference between the 6 cylinder version (top) and the 4 cylinder (bottom) here:</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small"><img src="cid:ii_kixir74p1" alt="image.png" width="399" height="420"></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">I certainly share Mike's frustration. <br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Truly, how much harder is it to make the part correctly with the correct BSF threads than to make it wrong.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">M<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Dec 20, 2020 at 12:46 PM Harold Manifold <<a href="mailto:manifold@telus.net">manifold@telus.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">Michael,</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">After learning from several of my mistakes when I mismatched
fasteners on my 1960 BT7 I always measure twice and assemble once. I have an
original of the part in the picture. The big end is 20 TPI with a major diameter
that matches a 7/16 UNF. A 7/16 - 20 UNF nut fits. The small end is 24 TPI
and the closest major diameter would be a 3/8 UNF but the diameter is
undersized however a 3/8 - 24 UNF nut does fit.</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">To help identify the tread type I measure the TPI and the
major diameter and the go to this website to see what fits. Knowing the tread
pitch helps to narrow down the possibilities.</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"><a href="https://www.ring-plug-thread-gages.com/ti-thread-data-charts.html" target="_blank">https://www.ring-plug-thread-gages.com/ti-thread-data-charts.html</a></font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">I trust this helps.... Harold</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div><br>
<div dir="ltr" lang="en-us" align="left">
<hr>
<font size="2" face="Tahoma"><b>From:</b> Healeys
[mailto:<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Kees
Oudesluijs<br><b>Sent:</b> Sunday, December 20, 2020 2:50 AM<br><b>To:</b>
<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a><br><b>Subject:</b> Re: [Healeys] What
Thread?<br></font><br></div>
<div></div>
<p>If UNF7/16 is just to large it may be metric, probably M10. In that case the
stud's outside diameter should be just shy of 10,0mm or at most 10,0mm when it
is shoddily cut.</p>
<p>Kees Oudesluijs</p>
<p><br></p>
<div>Op 20-12-2020 om 11:12 schreef john harper:<br></div>
<blockquote type="cite">
<div dir="ltr">Mike
<div><br></div>
<div>Both treads should be BSF. The problem is that not enough attention is
given to detail. Suppliers cannot bother to get things correct but they
know they have used an incorrect thread or otherwise, they would not have
supplied the nuts. The treads are most likely metric.</div>
<div><br></div>
<div>Rgds</div></div><br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Sun, 20 Dec 2020 at 09:19, Michael MacLean
<<a href="mailto:rrengineer.mike@att.net" target="_blank">rrengineer.mike@att.net</a>> wrote:<br></div>
<blockquote class="gmail_quote" style="padding-left:1ex;border-left:1px solid rgb(204,204,204);margin:0px 0px 0px 0.8ex">The
threaded pillar in the picture was purchased from Ahead4Healeys. This
is the pillar for the generator adjusting bracket. It came without the
nuts needed for the ends. I can't figure out what type of threads
these are. I bought a 1/2" BSF nut and a 7/16 BSF nut for it.
Problem is both of those nuts are too loose. When I try to tighten the
large thread on the front engine plate it will not tighten up. It gets
almost tight then pops loose and spins. The threads on the pillar are
not damaged, so it must be the wrong nut. Same for the other
end. A UNF nut will not go more than a couple of turns then
stops. I even tried running a metric die over the threads and no
dice. I am confused.
<div id="gmail-m_6462475041414177095gmail-m_7879211163302127992yMail_cursorElementTracker_1608455436597">Mike
MacLean
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