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Maybe contact a supplier/calibration place like Speedycables for advice?
Simon
=20
From: Healeys <healeys-bounces@autox.team.net> On Behalf Of Michael =
Salter
Sent: 05 May 2026 16:52
To: Alan Seigrist <healey.nut@gmail.com>
Cc: healeys@autox.team.net
Subject: Re: [Healeys] Instrument clamp nuts
=20
Good point Alan, it is not at all unlikely that some of the ones I have =
are from other and later models.
=20
M
=20
On Tue, May 5, 2026 at 11:50=E2=80=AFAM Alan Seigrist =
Ive had similar issues with oddball knurled nuts here and there in the =
past. I wonder if later MGBs and Triumphs had SAE threaded guages... =
might be the explaination
=20
On Thu, Apr 30, 2026 at 9:54=E2=80=AFPM Hank Leach via Healeys =
Michael-unfortunately the 100 parts book does not address the =
instruments. The later parts books do and for the BJ8 the nuts are =
17H1304. I just looked at a NOS speedo I have for the BJ8 and the thread =
is close to 8-32 but it only goes on a couple of threads so it is not =
Unified.
=20
Moss catalog calls for the nuts 300-370 for BN1 to BJ7 and for the BJ8 =
its part 361-035 so they are different than earlier instrument parts. =
Could be just the knurling as the BJs are fine knurls and others might =
be coarser. My thought is that all of them are/sb 3BA. Here are pics of =
100. 100-6 and 3000 (BJ8) Hank
--------------------=20
From: "Michael Salter" <michaelsalter@gmail.com =
Sent: April 29, 2026 at 8:33 AM PDT=20
Subject: [Healeys] Instrument clamp nuts=20
I have a collection of instrument retaining clamps and nuts but am =
confused about the different threads on those nuts.
As far as I can find the thread on the studs on the Smiths/Jaeger is 3BA =
however, I have several nuts (these are the round ones with various =
sorts of knurling on the periphery) that seem to have a different thread =
and will only go onto most of the instruments a turn or 2 before =
jamming.=20
Does anyone know if there is more than one thread used for these studs =
and other then 3BA what is the other thread.
=20
M
=20
_______________________________________________
Archive: http://www.team.net/pipermail/healeys =
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Maybe contact a =
supplier/calibration place like Speedycables for =
advice?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Simon<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm;font-size:pt'><p class=3DMsoNormal><b><span =
style=3D'font-family:"Calibri",sans-serif'>From:</span></b><span =
style=3D'font-family:"Calibri",sans-serif'> Healeys =
<healeys-bounces@autox.team.net> <b>On Behalf Of </b>Michael =
Salter<br><b>Sent:</b> 05 May 2026 16:52<br><b>To:</b> Alan Seigrist =
<healey.nut@gmail.com><br><b>Cc:</b> =
healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Instrument clamp =
nuts<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal><span style=3D'font-family:"Arial",sans-serif'>Good =
point Alan, it is not at all unlikely that some of the ones I have are =
from other and later models.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Arial",sans-serif'><o:p> </o:p></span></p></di=
v><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial",sans-serif'>M<o:p></o:p></span></p></div></d=
iv><p class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal>On Tue, May 5, 2026 at 11:50<span =
style=3D'font-family:"Arial",sans-serif'>=E2=80=AF</span>AM Alan =
Seigrist <<a =
href=3D"mailto:healey.nut@gmail.com";>healey.nut@gmail.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=3DMsoNormal>Ive =
had similar issues with oddball knurled nuts here and there in the =
past. I wonder if later MGBs and Triumphs had SAE threaded =
guages... might be the explaination<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Thu, Apr 30, 2026 at 9:54<span =
style=3D'font-family:"Arial",sans-serif'>=E2=80=AF</span>PM Hank Leach =
via Healeys <<a href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p =
class=3DMsoNormal>Michael-unfortunately the 100 parts book does not =
address the instruments. The later parts books do and for the BJ8 the =
nuts are 17H1304. I just looked at a NOS speedo I have for the BJ8 and =
the thread is close to 8-32 but it only goes on a couple of threads so =
it is not Unified.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>Moss catalog calls for the nuts 300-370 for BN1 to BJ7 =
and for the BJ8 its part 361-035 so they are different than earlier =
instrument parts. Could be just the knurling as the BJs are fine knurls =
and others might be coarser. My thought is that all of them are/sb 3BA. =
Here are pics of 100. 100-6 and 3000 (BJ8) =
Hank<o:p></o:p></p></div><div><p =
class=3DMsoNormal><br>-------------------- <br><br>From: "Michael =
Salter" <<a href=3D"mailto:michaelsalter@gmail.com"; =
target=3D"_blank">michaelsalter@gmail.com</a>> <br>To: <<a =
href=3D"mailto:healeys@autox.team.net"; =
target=3D"_blank">healeys@autox.team.net</a>> <br>Sent: April 29, =
2026 at 8:33 AM PDT <br>Subject: [Healeys] Instrument clamp nuts =
<o:p></o:p></p></div><div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial",sans-serif'>I have a collection of =
instrument retaining clamps and nuts but am confused about the different =
threads on those nuts.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'font-family:"Arial",sans-serif'>As far =
as I can find the thread on the studs on the Smiths/Jaeger is 3BA =
however, I have several nuts (these are the round ones with various =
sorts of knurling on the periphery) that seem to have a different thread =
and will only go onto most of the instruments a turn or 2 before =
jamming. <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'font-family:"Arial",sans-serif'>Does =
anyone know if there is more than one thread used for these studs and =
other then 3BA what is the other =
thread.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial",sans-serif'> <o:p></o:p></span></p></di=
v><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial",sans-serif'>M<o:p></o:p></span></p></div></d=
iv><div><p class=3DMsoNormal> <o:p></o:p></p></div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a href=3D"http://www.team.net/donate.html"; =
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