<div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">The fasteners wouldn't be HSS ...that is used for machine tools like drill bits and lathe tools.</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">M<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 9, 2022 at 1:47 PM Bob Haskell via Healeys <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Bob,<br>
<br>
HSS - high speed steel.<br>
I think the threads are 3/8"-26 BSF (British Standard Fine).<br>
<br>
Cheers,<br>
<br>
Bob Haskell<br>
Austin Healey 3000 BN7/BT7 registrar<br>
<br>
On 2/9/22 1:25 PM, Bob Spidell wrote:<br>
> What does ‘HSS’ stand for?<br>
><br>
><br>
>> On Feb 9, 2022, at 10:15 AM, <a href="mailto:gradea1@charter.net" target="_blank">gradea1@charter.net</a> wrote:<br>
>><br>
>> Just had a 100 engine to repair the oil feed pipe fitting on the <br>
>> rocker shaft 3rd block, and everyone might note that the thread for <br>
>> the special bolt is *3/8" x 26 HSS*. Helicoils are available for <br>
>> those who have "buggered" the fitting. Be careful when replacing this <br>
>> item on rebuild. Keep both ends loose until successfully threaded. <br>
>> The alloy rocker blocks are not easy to come by. Hank, healeyhelper.<br>
>><br>
>> -----------------------------------------<br>
>><br>
>> From: "Curtis Arndt"<br>
>> To: "Bob Spidell"<br>
>> Cc: "Healeys"<br>
>> Sent: Tuesday February 8 2022 11:28:21PM<br>
>> Subject: Re: [Healeys] 100 Road draft (vent) pipe fasteners<br>
>><br>
>> Bob,<br>
>><br>
>> If it's on the engine it's Whirworth, 1/4" BSF to be specific in the <br>
>> question you asked for #74.<br>
>><br>
>> Cheers,<br>
>><br>
>> Curt.<br>
>><br>
>> On Tue, Feb 8, 2022 at 3:58 PM Bob Spidell <<a href="mailto:bspidell@comcast.net" target="_blank">bspidell@comcast.net</a>> wrote:<br>
>><br>
>> Anyone know off-hand what type of fasteners are used, Whitworth, or ?<br>
>><br>
>> Items# 72 & 76 in the Moss catalog page:<br>
>> <a href="https://mossmotors.com/external-engine-100-4" rel="noreferrer" target="_blank">https://mossmotors.com/external-engine-100-4</a><br>
>><br>
>> TIA,<br>
>> Bob<br>
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