[Healeys] BSF Taps and Dies

[Bob Haskell]

Tom,

If the pipe is 1/2" outside diameter, then a 1/2"-13 UNC or 20 UNF die 
would be used.  Pipe is usually given by the inside diameter and 
normally has tapered threads (NPT), in the US.  A 1/2" pipe would use a 
1/2" NPT die which is much larger than the 1/2"-13 or 20 dies.

Cheers,

Bob Haskell
Austin Healey 3000 BN7/BT7 registrar

On 5/13/20 7:12 AM, Tom Felts wrote:
> Totally off Healey content, but here is a stupid question Re. dies.  I 
> have a piece of 1/2" OD steel pipe I want to thread (the outside).  I 
> don't know the die size to use.  A 1/2" die seems way too small.  Anyone 
> know what size die to use?  the number of threads doesn't matter---just 
> the size of the die.
> Thanks
> Tom
> 
> ----- Original Message -----
> From: Michael MacLean <rrengineer.mike at att.net>
> To: 'Healeys' <healeys at autox.team.net>, simon lachlan 
> <simon.lachlan at alexarevel.plus.com>
> Sent: Wed, 13 May 2020 02:51:28 -0400 (EDT)
> Subject: Re: [Healeys] BSF Taps and Dies
> 
> 
> I just want them to clean up threads.  Should be adequate for that..
> Mike M
> 
> 
> On Tuesday, May 12, 2020, 11:33:41 PM PDT, 
> <simon.lachlan at alexarevel.plus.com> wrote:
> 
> 
> I’ve got one of these. I’d say that it was adequate for an amateur (me). 
> The taps and dies are OK, but the tools are pretty marginal. Worth the 
> money.
> 
> Simon
> 
> *From:*Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Michael 
> MacLean
> *Sent:* 12 May 2020 23:28
> *To:* Healeys <healeys at autox.team.net>
> *Subject:* [Healeys] BSF Taps and Dies
> 
> just a FYI for those of you dealing with BSF fasteners.  Amazon sells a 
> BSF tap and die set for $36.
> 
> https://smile.amazon.com/BSF-20pc-British-Standard-Fine/dp/B01MCZHN40/ref=mp_s_a_1_5?dchild=1&keywords=AB+Tools-Toolzone&qid=1589322431&sr=8-5
> 
> 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>
> 
> 
> 
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