Subject: Re: [TR] How to tell the size of bolt or setscrew from the part number

From: Chris Kantarjiev <[email-masked]>
Date: Wed, 17 Jun 2020 13:48:49 -0700

You're on the right track, but not quite right.

The first time I saw this system explained was in TRF's TR250 manual.

HU is a "set screw" - fully threaded.
HB is a "bolt" - partially threaded.
HN is a nut.
JF is a jam nut (thin)
LN is a slotted nut (castle nut)
TN is a thin nyloc nut
YN is a thick nyloc nut
WL is a split lock washer
WP is a plain (flat) washer

By default, it's grade 5 hardware. Bolts that have part numbers outside 
this system are special in some way - stronger, or have a shoulder, or 
an unusually threaded section. For example, the bolts that connect drive 
shaft flanges are not in this system (and I prefer to use AN hardware 
for them, but that's a different discussion).

For bolts, the first digit indicates the *wrench* size, and the 
second/third digit indicated the length in 1/16" increments. So HU704 
takes a 7/16 wrench (so it's a 1/4" bolt) and is 1/2" long.

For nuts, the last two digit indicates the wrench size.

For washers, the last two digits indicates the wrench size of the 
associated through bolt/nut.
** [email-masked] **

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From: Chris Kantarjiev <[email-masked]>
Date: Wed, 17 Jun 2020 13:51:33 -0700

On 6/17/20 1:48 PM, Chris Kantarjiev wrote:
Oh, I should have also said: these are all UNF threaded.
> By default, it's grade 5 hardware. Bolts that have part numbers 
> outside this system are special in some way - stronger, or have a 
> shoulder, or an unusually threaded section. For example, the bolts 
> that connect drive shaft flanges are not in this system (and I prefer 
> to use AN hardware for them, but that's a different discussion).
>

---

From: Michael Porter <[email-masked]>
Date: Wed, 17 Jun 2020 16:02:24 -0600

> WP is a plain (flat) washer

Hmm, I stand corrected on the B-L system.  I didn't think it had much 
rhyme or reason to it.  The S-T system, however, I think, is 
sequentially based.

Cheers.

-- 

Michael Porter
Roswell, NM

Never let anyone drive you crazy when you know it's within walking distance....

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From: Sujit Roy <[email-masked]>
Date: Thu, 18 Jun 2020 11:47:28 -0700

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Hi Chris,
Thanks for the explanation. I will go through it. From looking at the
hardware catalogue I have a curve ball here HU0754 is listed as a UNC. How
do you tell this one?
What about  HU1157 or HU 855
I'm putting  a Stag engine and box together. I have a boat load of bolts
from a parts car to choose from and with this shelter in place, and
working from home all day in front of the computer. (tech support) I goof
off and  am sorting out the bolts. I have the Stag parts book and the
standard hardware catalog that I'm having to keep referring to.
Unfortunately, the pdf copy of the hardware catalog floating around is not
that great on the eye of a 50 year old. I'm having to zoom in a lot.

I've just created a spreadsheet of 1-24  for digit 2/3 on the numbering
system and this will cover me up to 3 inch bolts. (I'll share it once I
figure out how to display fractions.

Sujit

On Wed, Jun 17, 2020 at 3:10 PM Michael Porter <[email-masked]> wrote:

> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/[email-masked]
>

-- 
Sujit Roy
Cupertino, California

https://triumphstagblog.wordpress.com/

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<div dir=3D"ltr">Hi Chris,<div>Thanks for the explanation. I will go throug=
h it. From looking=C2=A0at the hardware catalogue I have a curve ball=C2=A0=
here HU0754 is listed as a UNC. How do you tell this one?</div><div>What ab=
out=C2=A0 HU1157 or HU 855</div><div>I&#39;m putting=C2=A0 a Stag engine an=
d box together. I have a boat load of bolts from a parts car to choose=C2=
=A0from and with this shelter in place, and working=C2=A0from home all day =
in front of the computer. (tech support) I goof off and=C2=A0 am sorting=C2=
=A0out the bolts. I have the Stag parts book and the standard hardware=C2=
=A0catalog that I&#39;m having=C2=A0to keep referring=C2=A0to. Unfortunatel=
y, the pdf copy of the hardware=C2=A0catalog floating around is not that gr=
eat on the=C2=A0eye of a 50 year old. I&#39;m having to zoom=C2=A0in a lot.=
=C2=A0<br></div><div><br></div><div>I&#39;ve just created a spreadsheet=C2=
=A0of 1-24=C2=A0 for digit 2/3 on the numbering system and this will cover =
me up to 3 inch bolts. (I&#39;ll share it once I figure out how to display =
fractions.</div><div><br></div><div>Sujit</div><div><br></div></div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Jun 1=
7, 2020 at 3:10 PM Michael Porter &lt;<a href=3D"mailto:[email-masked]">m=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex">On 6/17/2020 2:48 PM, Chris Kantarjiev wrote:<br>
&gt; You&#39;re on the right track, but not quite right.<br>
&gt;<br>
&gt; The first time I saw this system explained was in TRF&#39;s TR250 manu=
al.<br>
&gt;<br>
&gt; HU is a &quot;set screw&quot; - fully threaded.<br>
&gt; HB is a &quot;bolt&quot; - partially threaded.<br>
&gt; HN is a nut.<br>
&gt; JF is a jam nut (thin)<br>
&gt; LN is a slotted nut (castle nut)<br>
&gt; TN is a thin nyloc nut<br>
&gt; YN is a thick nyloc nut<br>
&gt; WL is a split lock washer<br>
&gt; WP is a plain (flat) washer<br>
<br>
<br>
Hmm, I stand corrected on the B-L system.=C2=A0 I didn&#39;t think it had m=
uch <br>
rhyme or reason to it.=C2=A0 The S-T system, however, I think, is <br>
sequentially based.<br>
<br>
<br>
Cheers.<br>
<br>
-- <br>
<br>
<br>
Michael Porter<br>
Roswell, NM<br>
<br>
<br>
Never let anyone drive you crazy when you know it&#39;s within walking dist=
ance....<br>
<br>
<br>
** <a href=3D"mailto:[email-masked]" target=3D"_blank">triumphs@au=
tox.team.net</a> **<br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs" rel=3D"noreferr=
er" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=C2=A0 <a h=
ref=3D"http://www.team.net/archive" rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/archive</a><br>
<br>
hs/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox=
.team.net/mailman/options/triumphs/[email-masked]</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature"><div dir=3D"ltr"><div>Sujit Roy<br>Cupertino, Ca=
lifornia</div><div><br><a href=3D"https://triumphstagblog.wordpress.com/" t=
arget=3D"_blank">https://triumphstagblog.wordpress.com/</a><br><br></div></=
div></div>

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From: "Keith Stewart" <[email-masked]>
Date: Thu, 18 Jun 2020 15:39:38 -0400

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These are some of those bolts that are "special in some way". Where do I =
find their part numbers in case I need to order more?

=20

Keith Stewart

[email-masked]

=20

=20

=20

-----Original Message-----
From: Chris Kantarjiev <[email-masked]>=20
Sent: June 17, 2020 4:49 PM

=20

By default, it's grade 5 hardware. Bolts that have part numbers outside =
this system are special in some way - stronger, or have a shoulder, or =
an unusually threaded section. For example, the bolts that connect drive =
shaft flanges are not in this system (and I prefer to use AN hardware =
for them, but that's a different discussion).

=20

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoPlainText>These are some of those bolts that are =
&quot;special in some way&quot;. Where do I find their part numbers in =
case I need to order more?<o:p></o:p></p><p class=3DMsoPlainText><img =
width=3D399 height=3D611 style=3D'width:4.1583in;height:6.3625in' =
id=3D"Picture_x0020_1" =
src=3D"cid:[email-masked]"><o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-CA'>Keith =
Stewart<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-CA'>[email-masked]<o:p></o:p></sp=
an></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><span =
lang=3DEN-US style=3D'mso-fareast-language:EN-CA'>-----Original =
Message-----<br>From: Chris Kantarjiev &lt;[email-masked]&gt; =
<br>Sent: June 17, 2020 4:49 PM</span><o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>By =
default, it's grade 5 hardware. Bolts that have part numbers outside =
this system are special in some way - stronger, or have a shoulder, or =
an unusually threaded section. For example, the bolts that connect drive =
shaft flanges are not in this system (and I prefer to use AN hardware =
for them, but that's a different discussion).<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p></div></body></html>
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From: David Friedlander <[email-masked]>
Date: Thu, 18 Jun 2020 15:46:50 -0400

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Hah! Love it, Keith! I could use a boxful of those
second bolts in the illustration: For mismatched holes.....

Dave

On Thu, Jun 18, 2020 at 3:40 PM Keith Stewart <[email-masked]> wrote:

> These are some of those bolts that are "special in some way". Where do I
> From: Chris Kantarjiev <[email-masked]>
> this system are special in some way - stronger, or have a shoulder, or an
> unusually threaded section. For example, the bolts that connect drive shaft
> flanges are not in this system (and I prefer to use AN hardware for them,
> but that's a different discussion).
>
>
> http://autox.team.net/mailman/options/triumphs/[email-masked]
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:large;color:#000099">Hah! Love it, Keith! I coul=
d use a boxful of those=C2=A0</div><div class=3D"gmail_default" style=3D"fo=
nt-family:comic sans ms,sans-serif;font-size:large;color:#000099">second bo=
lts in the illustration: For mismatched holes.....</div><div class=3D"gmail=
_default" style=3D"font-family:comic sans ms,sans-serif;font-size:large;col=
or:#000099"><br></div><div class=3D"gmail_default" style=3D"font-family:com=
ic sans ms,sans-serif;font-size:large;color:#000099">Dave</div></div><br><d=
iv class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Jun =
18, 2020 at 3:40 PM Keith Stewart &lt;<a href=3D"mailto:[email-masked]=
et">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20=
4,204);padding-left:1ex"><div lang=3D"EN-CA"><div class=3D"gmail-m_49980388=
1854638637WordSection1"><p class=3D"gmail-m_499803881854638637MsoPlainText"=
>These are some of those bolts that are &quot;special in some way&quot;. Wh=
ere do I find their part numbers in case I need to order more?<u></u><u></u=
></p><p class=3D"gmail-m_499803881854638637MsoPlainText"><img width=3D"399"=
 height=3D"611" style=3D"width: 4.1583in; height: 6.3625in;" id=3D"gmail-m_=
499803881854638637Picture_x0020_1" src=3D"cid:172c8f714684ce8e91"><u></u><u=
></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNorm=
al"><span>Keith Stewart<u></u><u></u></span></p><p class=3D"MsoNormal"><spa=
n><a href=3D"mailto:[email-masked]" target=3D"_blank">keithstewart@b=
ell.net</a><u></u><u></u></span></p><p class=3D"MsoNormal"><u></u>=C2=A0<u>=
</u></p><p class=3D"gmail-m_499803881854638637MsoPlainText"><u></u>=C2=A0<u=
></u></p><p class=3D"gmail-m_499803881854638637MsoPlainText"><u></u>=C2=A0<=
u></u></p><p class=3D"gmail-m_499803881854638637MsoPlainText"><span lang=3D=
"EN-US">-----Original Message-----<br>From: Chris Kantarjiev &lt;<a href=3D=
"mailto:[email-masked]" target=3D"_blank">[email-masked]</a>&gt; <br>Se=
nt: June 17, 2020 4:49 PM</span><u></u><u></u></p><p class=3D"gmail-m_49980=
3881854638637MsoPlainText"><u></u>=C2=A0<u></u></p><p class=3D"gmail-m_4998=
03881854638637MsoPlainText">By default, it&#39;s grade 5 hardware. Bolts th=
at have part numbers outside this system are special in some way - stronger=
, or have a shoulder, or an unusually threaded section. For example, the bo=
lts that connect drive shaft flanges are not in this system (and I prefer t=
o use AN hardware for them, but that&#39;s a different discussion).<u></u><=
u></u></p><p class=3D"gmail-m_499803881854638637MsoPlainText"><u></u>=C2=A0=
<u></u></p></div></div>** <a href=3D"mailto:[email-masked]" target=
=3D"_blank">[email-masked]</a> **<br>
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Archive: <a href=3D"http://www.team.net/pipermail/triumphs" rel=3D"noreferr=
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</blockquote></div>

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