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Re: [Healeys] One for the thread guys

To: "'Michael Salter'" <michaelsalter@gmail.com>, "'Mirek Sharp'" <m.g.sharp@sympatico.ca>
Subject: Re: [Healeys] One for the thread guys
From: John Spaur via Healeys <healeys@autox.team.net>
Date: Sun, 2 Jun 2024 12:13:04 -0700
Cc: healeys@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CAB3i7LLcUDgRj+RCjYzNTwyLc4FQOTKKAF5uAPKavcpmqCwv4w@mail.gmail.com> <007901dab50c$369bdbf0$a3d393d0$@sympatico.ca> <CAB3i7LKv0x2++K4gz9E1FEMoiZxHtg3nP--Sx6O6tKzAy11Opg@mail.gmail.com>
Thread-index: AQHoorGXwJNMwIPfFyj+Cm6U+tV4fAG1xUGYAkhZOwKxeQoXgA==
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When I rebuilt the engine in my 1962 BT7 I cleaned the threads with a =
9/16-18NF tap. When I reinstalled the bulb I used Hylomar, possibly the =
hardening type, to seal the threads. No leaks.

=20

John

=20

From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of =
Michael Salter
Sent: Sunday, June 2, 2024 10:42 AM
To: Mirek Sharp <m.g.sharp@sympatico.ca>
Cc: healeys@autox.team.net
Subject: Re: [Healeys] One for the thread guys

=20

I don't have a 55 degree 16 TPI thread gauge but my 60 degree seems to =
be a very good fit.

=20

On Sun., Jun. 2, 2024, 12:45 p.m. , <m.g.sharp@sympatico.ca =

Bit of a stumper Mike.  Tracy tools, my go-to source for taps and dies, =
sell a tap that is 5/8=E2=80=9Dx16 with a =E2=80=9CUNS=E2=80=9D thread =
form https://www.tracytools.com/product/5-8-x-16-tpi

I am unfamiliar with UNS but believe it is the abbreviation for Unified =
National Special, suggesting it is non-standard thread.  Looks like a =
bit of a rabbit hole and I am curious to see what others find.

=20

From: Healeys <healeys-bounces@autox.team.net =
Sent: Sunday, June 2, 2024 10:26 AM
Subject: [Healeys] One for the thread guys

=20

The thread on the flare nut used to secure the temperature bulb into the =
head on later 6 cylinder engines is 5/8" diameter and 16 TPI.

Is this some sort of standard thread or a "special"?


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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>When I rebuilt the engine in my 1962 BT7 I cleaned the threads with a =
9/16-18NF tap. When I reinstalled the bulb I used Hylomar, possibly the =
hardening type, to seal the threads. No leaks.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>John<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of =
</b>Michael Salter<br><b>Sent:</b> Sunday, June 2, 2024 10:42 =
AM<br><b>To:</b> Mirek Sharp =
&lt;m.g.sharp@sympatico.ca&gt;<br><b>Cc:</b> =
healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] One for the =
thread guys<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>I don't =
have a 55 degree 16 TPI thread gauge but my 60 degree seems to be a very =
good fit.<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Sun., Jun. 2, 2024, 12:45 p.m. , &lt;<a =
href=3D"mailto:m.g.sharp@sympatico.ca";>m.g.sharp@sympatico.ca</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Bit of a =
stumper Mike.&nbsp; Tracy tools, my go-to source for taps and dies, sell =
a tap that is 5/8=E2=80=9Dx16 with a =E2=80=9CUNS=E2=80=9D thread form =
<a href=3D"https://www.tracytools.com/product/5-8-x-16-tpi"; =
target=3D"_blank">https://www.tracytools.com/product/5-8-x-16-tpi</a></sp=
an><span lang=3DEN-CA><o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>I am =
unfamiliar with UNS but believe it is the abbreviation for Unified =
National Special, suggesting it is non-standard thread.&nbsp; Looks like =
a bit of a rabbit hole and I am curious to see what others =
find.</span><span lang=3DEN-CA><o:p></o:p></span></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>&nbsp;</span>=
<span lang=3DEN-CA><o:p></o:p></span></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Healeys &lt;<a href=3D"mailto:healeys-bounces@autox.team.net"; =
target=3D"_blank">healeys-bounces@autox.team.net</a>&gt; <b>On Behalf Of =
</b>Michael Salter<br><b>Sent:</b> Sunday, June 2, 2024 10:26 =
AM<br><b>To:</b> <a href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a><br><b>Subject:</b> =
[Healeys] One for the thread guys</span><span =
lang=3DEN-CA><o:p></o:p></span></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>&nbsp;<o:p></o:p></span></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>The thread on the flare nut used to secure the temperature =
bulb into the head on later 6 cylinder engines is 5/8&quot; diameter and =
16 TPI.<o:p></o:p></span></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-CA>Is this some sort of standard thread or a =
&quot;special&quot;?<o:p></o:p></span></p></div></div></div></div></block=
quote></div></div></body></html>
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