Subject: Re: [Healeys] 6-36 windscreen screws

From: i erbs <[email-masked]>
Date: Wed, 10 Feb 2016 13:47:46 -0800

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correct

Ira Erbs
Portland,OR
1959 BN4 100-6
with BT7 engine and disk brakes.

On Wed, Feb 10, 2016 at 1:31 PM, Ian Hey <[email-masked]> wrote:

> Hello All
>
>
>
> I have a BJ7 and have been told (by AH Spares) that the windscreen screws
> are 2BA.  That is similar to No10 UNF so that is what mine now are.
>
>
>
> No 6-36 sounds as if it is very similar to 4BA which is 0.142 inch
> diameter, 38.5 threads per inch.  BA (British Association) threads are
> widely used for threads less than =C2=BC inch in all British mechanical a=
nd
> electrical equipment up to the 1960s and 1970s.  They have probably died
> out now in new equipment.  The largest is 0BA which has a diameter of 0.2=
36
> inch.
>
>
>
> I suspect that the windscreen screws referred to as No 6-36 are actually
> 4BA
>
>
>
> Regards
>
>
>
> Ian Hey
>
>
>
>
>
>
>
>
>
>
>
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<div dir=3D"ltr">correct</div><div class=3D"gmail_extra"><br clear=3D"all">=
<div><div class=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr">=
Ira Erbs<div>Portland,OR</div><div>1959 BN4 100-6</div><div>with BT7 engine=
 and disk brakes.</div></div></div></div></div></div>
<br><div class=3D"gmail_quote">On Wed, Feb 10, 2016 at 1:31 PM, Ian Hey <sp=
an dir=3D"ltr">&lt;<a href=3D"mailto:[email-masked]" target=3D"_bla=
nk">[email-masked]</a>&gt;</span> wrote:<br><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex">

<u></u>

<div lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">

<div>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">Hello All<u></u><u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">I have a BJ7 and have been told (by AH Spare=
s) that the
windscreen screws are 2BA.=C2=A0 That is similar to No10 UNF so that is wha=
t
mine now are.<u></u><u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">No 6-36 sounds as if it is very similar to 4=
BA which is
0.142 inch diameter, 38.5 threads per inch.=C2=A0 BA (British Association)
threads are widely used for threads less than =C2=BC inch in all British me=
chanical
and electrical equipment up to the 1960s and 1970s.=C2=A0 They have probabl=
y
died out now in new equipment.=C2=A0 The largest is 0BA which has a diamete=
r of
0.236 inch.<u></u><u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">I suspect that the windscreen screws referre=
d to as No 6-36
are actually 4BA<u></u><u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">Regards<span class=3D"HOEnZb"><font color=3D=
"#888888"><u></u><u></u></font></span></span></font></p><span class=3D"HOEn=
Zb"><font color=3D"#888888">

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><u></u><font size=3D"2" face=3D"Arial"><span style=
=3D"font-size:10.0pt;font-family:Arial">Ian Hey</span></font><u></u><font s=
ize=3D"2" face=3D"Arial"><span style=3D"font-size:10.0pt;font-family:Arial"=
><u></u><u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"3" face=3D"Arial"><span style=3D"font-=
size:12.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"3" face=3D"Arial"><span style=3D"font-=
size:12.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"3" face=3D"Arial"><span style=3D"font-=
size:12.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

<p class=3D"MsoNormal"><font size=3D"3" face=3D"Arial"><span style=3D"font-=
size:12.0pt;font-family:Arial"><u></u>=C2=A0<u></u></span></font></p>

</font></span></div>

</div>

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<br></blockquote></div><br></div>

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---

From: Curtis Arndt <[email-masked]>
Date: Wed, 10 Feb 2016 13:52:50 -0800

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Windscreen screws on 100s are no. 4 BA.  The six cylinder screws are NOT
2BA. AH Spares is wrong on this one.

Regarding no. 2 BA and 10-32 being similar they may be about the same size
but they are in NO WAY interchangeable!!!

A 10-32 screw has 32 tpi and has a 60 degree pitch angle of the threads.  A
no. 2 BA has 31.4 tpi and is 47 1/2 degree pitch angle of the threads.

Cheers,

Curt
AH Concours Registry Chairman and fastener expert

nd
36
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>
>

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<div dir=3D"ltr"><div><div><div><div>Windscreen screws on 100s are no. 4 BA=
.=C2=A0 The six cylinder screws are NOT 2BA. AH Spares is wrong on this one=
.<br><br></div>Regarding no. 2 BA and 10-32 being similar they may be about=
 the same size but they are in NO WAY interchangeable!!!<br><br></div>A 10-=
32 screw has 32 tpi and has a 60 degree pitch angle of the threads.=C2=A0 A=
 no. 2 BA has 31.4 tpi and is 47 1/2 degree pitch angle of the threads.<br>=
<br></div>Cheers,<br><br></div>Curt <br>AH Concours Registry Chairman and f=
astener expert<br></div><div class=3D"gmail_extra"><br><div class=3D"gmail_=
quote">On Wed, Feb 10, 2016 at 1:31 PM, Ian Hey <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
om</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<u></u>

<div link=3D"blue" vlink=3D"purple" lang=3D"EN-GB">

<div>

</font></span></div>

</div>

s/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.tea=
m.net/mailman/options/healeys/[email-masked]</a><br>

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[email-masked]

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From: i erbs <[email-masked]>
Date: Wed, 10 Feb 2016 19:29:33 -0800

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Curt, Do you have source for the screws? I think that is where this thread
started...

Ira Erbs
Portland,OR
      _______                                  _______
     (______ \____1959 BN4____/ _______)
         (_________________________)
          BT7 engine and disk brakes

On Wed, Feb 10, 2016 at 1:52 PM, Curtis Arndt <[email-masked]> wrote:

> Regarding no. 2 BA and 10-32 being similar they may be about the same siz=
e
> A 10-32 screw has 32 tpi and has a 60 degree pitch angle of the threads.
> A no. 2 BA has 31.4 tpi and is 47 1/2 degree pitch angle of the threads.
>
> Cheers,
>
> Curt
>> I have a BJ7 and have been told (by AH Spares) that the windscreen screw=
s
>> widely used for threads less than =C2=BC inch in all British mechanical =
and
>> out now in new equipment.  The largest is 0BA which has a diameter of 0.=
236
>> I suspect that the windscreen screws referred to as No 6-36 are actually

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<div dir=3D"ltr">Curt, Do you have source for the screws? I think that is w=
here this thread started...</div><div class=3D"gmail_extra"><br clear=3D"al=
l"><div><div class=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"lt=
r"><div dir=3D"ltr">Ira Erbs<div>Portland,OR</div><div><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">=C2=A0 =C2=A0 =C2=A0 _______ =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0_______</span><br style=3D"font-famil=
y:&#39;Times New Roman&#39;,serif"><span style=3D"font-family:&#39;Times Ne=
w Roman&#39;,serif">=C2=A0 =C2=A0=C2=A0 (______ \____1959 BN4____/ _______)=
</span><br style=3D"font-family:&#39;Times New Roman&#39;,serif"><span styl=
e=3D"font-family:&#39;Times New Roman&#39;,serif">=C2=A0 =C2=A0 =C2=A0 =C2=
=A0=C2=A0 (_________________________)</span></div><div>=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 BT7 engine and disk brakes</div></div></div></div></div></di=
v></div>
<br><div class=3D"gmail_quote">On Wed, Feb 10, 2016 at 1:52 PM, Curtis Arnd=
t <span dir=3D"ltr">&lt;<a href=3D"mailto:[email-masked]" target=3D"_bl=
ank">[email-masked]</a>&gt;</span> wrote:<br><blockquote class=3D"gmail=
_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:=
1ex"><div dir=3D"ltr"><div><div><div><div>Windscreen screws on 100s are no.=
 4 BA.=C2=A0 The six cylinder screws are NOT 2BA. AH Spares is wrong on thi=
s one.<br><br></div>Regarding no. 2 BA and 10-32 being similar they may be =
about the same size but they are in NO WAY interchangeable!!!<br><br></div>=
A 10-32 screw has 32 tpi and has a 60 degree pitch angle of the threads.=C2=
=A0 A no. 2 BA has 31.4 tpi and is 47 1/2 degree pitch angle of the threads=
.<br><br></div>Cheers,<br><br></div>Curt <br>AH Concours Registry Chairman =
and fastener expert<br></div><div class=3D"gmail_extra"><br><div class=3D"g=
mail_quote"><span class=3D"">On Wed, Feb 10, 2016 at 1:31 PM, Ian Hey <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:[email-masked]" target=3D"_blank=
">[email-masked]</a>&gt;</span> wrote:<br></span><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div><div class=3D"h5">

<u></u>

<div>

<p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span style=3D"font-=
size:10.0pt;font-family:Arial">Regards<span><font color=3D"#888888"><u></u>=
<u></u></font></span></span></font></p><span><font color=3D"#888888">

</font></span></div>

</div>

<br></div></div><span class=3D"">__________________________________________=
_____<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
eam.net</a><br>
<br></span>

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[email-masked]

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From: i erbs <[email-masked]>
Date: Wed, 10 Feb 2016 20:17:02 -0800

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Thanks

Mr. Ira Erbs
Portland,OR
On Feb 10, 2016 8:16 PM, "Curtis Arndt" <[email-masked]> wrote:

> Ira,
>
> I believe that I ordered them years ago from Namrick in England, but I
> just checked their website and cannot find BA Screws. I just checked with
> British Tools & Fasteners and they have 4BA X 1/4" slotted screws...
>
> http://britishfasteners.com/screws/steel-screws/ba-countersunk-screws.htm=
l
>
> This is most likely where I ordered them from last.
>
> Cheers,
>
> Curt
>
> On Wed, Feb 10, 2016 at 7:29 PM, i erbs <[email-masked]> wrote:
>
>> Curt, Do you have source for the screws? I think that is where this
>> thread started...
>>
>> Ira Erbs
>> Portland,OR
>>       _______                                  _______
>> On Wed, Feb 10, 2016 at 1:52 PM, Curtis Arndt <[email-masked]> wrote=
:
>>
>>> Windscreen screws on 100s are no. 4 BA.  The six cylinder screws are NO=
T
>>> Regarding no. 2 BA and 10-32 being similar they may be about the same
>>> size but they are in NO WAY interchangeable!!!
>>>
>>> A 10-32 screw has 32 tpi and has a 60 degree pitch angle of the
>>> threads.  A no. 2 BA has 31.4 tpi and is 47 1/2 degree pitch angle of t=
he
>>> threads.
>>> On Wed, Feb 10, 2016 at 1:31 PM, Ian Hey <[email-masked]> wrote=
:
>>>
>>>> Hello All
>>>>
>>>>
>>>>
>>>> I have a BJ7 and have been told (by AH Spares) that the windscreen
>>>> screws are 2BA.  That is similar to No10 UNF so that is what mine now =
are.
>>>> widely used for threads less than =C2=BC inch in all British mechanica=
l and
>>>> electrical equipment up to the 1960s and 1970s.  They have probably di=
ed
>>>> out now in new equipment.  The largest is 0BA which has a diameter of =
0.236
>>>> inch.
>>>>
>>>>
>>>>
>>>> I suspect that the windscreen screws referred to as No 6-36 are
>>>> actually 4BA
>>>>
>>>>
>>>>
>>>> Regards
>>>>
>>>>
>>>>
>>>> Ian Hey
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>

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<p dir=3D"ltr">Thanks</p>
<p dir=3D"ltr">Mr. Ira Erbs<br>
Portland,OR</p>
<div class=3D"gmail_quote">On Feb 10, 2016 8:16 PM, &quot;Curtis Arndt&quot=
; &lt;<a href=3D"mailto:[email-masked]">[email-masked]</a>&gt; wrot=
e:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">=
<div><div><div>Ira,<br><br></div>I believe that I ordered them years ago fr=
om Namrick in England, but I just checked their website and cannot find BA =
Screws. I just checked with British Tools &amp; Fasteners and they have 4BA=
 X 1/4&quot; slotted screws...<br><br><a href=3D"http://britishfasteners.co=
m/screws/steel-screws/ba-countersunk-screws.html" target=3D"_blank">http://=
britishfasteners.com/screws/steel-screws/ba-countersunk-screws.html</a><br>=
<br></div><div>This is most likely where I ordered them from last.<br></div=
><div><br></div>Cheers,<br><br></div>Curt<br></div><div class=3D"gmail_extr=
a"><br><div class=3D"gmail_quote">On Wed, Feb 10, 2016 at 7:29 PM, i erbs <=
span dir=3D"ltr">&lt;<a href=3D"mailto:[email-masked]" target=3D"_blan=
k">[email-masked]</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex"><div dir=3D"ltr">Curt, Do you have source for the screws? I think that =
is where this thread started...</div><div class=3D"gmail_extra"><br clear=
=3D"all"><div><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div dir=3D"ltr">=
Ira Erbs<div>Portland,OR</div><div><span style=3D"font-family:&#39;Times Ne=
w Roman&#39;,serif">=C2=A0 =C2=A0 =C2=A0 _______ =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0_______</span><br style=3D"font-family:&#39;Times New R=
oman&#39;,serif"><span style=3D"font-family:&#39;Times New Roman&#39;,serif=
">=C2=A0 =C2=A0=C2=A0 (______ \____1959 BN4____/ _______)</span><br style=
=3D"font-family:&#39;Times New Roman&#39;,serif"><span style=3D"font-family=
:&#39;Times New Roman&#39;,serif">=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0 (______=
___________________)</span></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BT=
7 engine and disk brakes</div></div></div></div></div></div></div>
<br><div class=3D"gmail_quote"><div><div>On Wed, Feb 10, 2016 at 1:52 PM, C=
urtis Arndt <span dir=3D"ltr">&lt;<a href=3D"mailto:[email-masked]" tar=
get=3D"_blank">[email-masked]</a>&gt;</span> wrote:<br></div></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #c=
cc solid;padding-left:1ex"><div><div><div dir=3D"ltr"><div><div><div><div>W=
indscreen screws on 100s are no. 4 BA.=C2=A0 The six cylinder screws are NO=
T 2BA. AH Spares is wrong on this one.<br><br></div>Regarding no. 2 BA and =
10-32 being similar they may be about the same size but they are in NO WAY =
interchangeable!!!<br><br></div>A 10-32 screw has 32 tpi and has a 60 degre=
e pitch angle of the threads.=C2=A0 A no. 2 BA has 31.4 tpi and is 47 1/2 d=
egree pitch angle of the threads.<br><br></div>Cheers,<br><br></div>Curt <b=
r>AH Concours Registry Chairman and fastener expert<br></div><div class=3D"=
gmail_extra"><br><div class=3D"gmail_quote"><span>On Wed, Feb 10, 2016 at 1=
:31 PM, Ian Hey <span dir=3D"ltr">&lt;<a href=3D"mailto:rianhey@btinternet.=
com" target=3D"_blank">[email-masked]</a>&gt;</span> wrote:<br></sp=
an><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left=
:1px #ccc solid;padding-left:1ex"><div><div>

<u></u>

<div>

</font></span></div>

</div>

<br></div></div><span>_______________________________________________<br>
<br></div></div>
</blockquote></div><br></div>
</blockquote></div>

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