Re: [Healeys] Fastener Curiosity

[John Harper <ah100register@gmail.com>]

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Mike

Just as a matter of interest; early Whitworth fasteners like nuts and bolts
heads were originally larger than is the general  case today

They were one size different so for example on a spanner you will see
markings like 1W/4 and 5/16 BSF. on the same end.

Best regards

On Fri, 5 Jun 2020 at 14:04, Michael MacLean <rrengineer.mike@att.net>
wrote:

> Kees,
>      I know the difference.  I have a degree in mechanical design and have
> worked as an aerospace fastener designer.  The threads in both nuts were
> exactly the same BSF thread.  The only difference was the distance across
> flats were BSF/Whitworth on one set of nuts and SAE across flats distance
> wise on the other set.  That is what surprised me.  I did not know hybrid
> fasteners even existed, but both sets were sold as fastener sets for 100-4
> pedestal studs.
> Mike MacLean
>
> Sent from AT&T Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>
> On Fri, Jun 5, 2020 at 3:33 AM, Kees Oudesluijs
> <coudesluijs@chello.nl> wrote:
> _______________________________________________
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>

-- 
Best wishes

John Harper

AHC UK 100 Register Secretary

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<div dir=3D"ltr">Mike<div><br></div><div>Just as a matter of interest; earl=
y Whitworth fasteners=C2=A0like nuts and bolts heads were originally larger=
 than is the general=C2=A0 case today</div><div><br></div><div>They were on=
e size different so for example on a spanner you will see markings like 1W/=
4 and 5/16 BSF. on the same end.</div><div><br></div><div>Best regards</div=
></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Fri, 5 Jun 2020 at 14:04, Michael MacLean &lt;<a href=3D"mailto:rrengin=
eer.mike@att.net">rrengineer.mike@att.net</a>&gt; wrote:<br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex">Kees,=C2=A0<div id=3D"gmail-m_-838=
2441617740887944yMail_cursorElementTracker_1591361637003">=C2=A0 =C2=A0 =C2=
=A0I know the difference.=C2=A0 I have a degree in mechanical design and ha=
ve worked as an aerospace fastener designer.=C2=A0 The threads in both nuts=
 were exactly the same BSF thread.=C2=A0 The only difference was the distan=
ce across flats were BSF/Whitworth on one set of nuts and SAE across flats =
distance wise on the other set.=C2=A0 That is what surprised me.=C2=A0 I di=
d not know hybrid fasteners even existed, but both sets were sold as fasten=
er sets for 100-4 pedestal studs.</div><div id=3D"gmail-m_-8382441617740887=
944yMail_cursorElementTracker_1591361992013">Mike MacLean<br><br><div id=3D=
"gmail-m_-8382441617740887944ymail_android_signature"><a id=3D"gmail-m_-838=
2441617740887944ymail_android_signature_link" href=3D"https://go.onelink.me=
/107872968?pid=3DInProduct&amp;c=3DGlobal_Internal_YGrowth_AndroidEmailSig_=
_AndroidUsers&amp;af_wl=3Dym&amp;af_sub1=3DInternal&amp;af_sub2=3DGlobal_YG=
rowth&amp;af_sub3=3DEmailSignature" target=3D"_blank">Sent from AT&amp;T Ya=
hoo Mail on Android</a></div> <br> <blockquote style=3D"margin:0px 0px 20px=
"> <div style=3D"font-family:Roboto,sans-serif;color:rgb(109,0,246)"> <div>=
On Fri, Jun 5, 2020 at 3:33 AM, Kees Oudesluijs</div><div>&lt;<a href=3D"ma=
ilto:coudesluijs@chello.nl" target=3D"_blank">coudesluijs@chello.nl</a>&gt;=
 wrote:</div> </div> <div style=3D"padding:10px 0px 0px 20px;margin:10px 0p=
x 0px;border-left:1px solid rgb(109,0,246)"> ______________________________=
_________________<br clear=3D"none">Support Team.Net <a shape=3D"rect" href=
=3D"http://www.team.net/donate.html"; target=3D"_blank">http://www.team.net/=
donate.html</a><br clear=3D"none">Suggested annual donation=C2=A0 $12.75<br=
 clear=3D"none"><br clear=3D"none">Archive: <a shape=3D"rect" href=3D"http:=
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r clear=3D"none"><br clear=3D"none"> </div> </blockquote></div>____________=
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</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature"><div dir=3D"ltr">Best wishes<div><br></div><div>=
John Harper</div><div><br></div><div>AHC UK 100 Register Secretary</div></d=
iv></div>

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