[Healeys] BSF Taps and Dies

[Charles Schott]

The holder for the better tap and die kits have a built in guide to keep the die straight. No problem with cutting an inch or more of thread. 

Regards, 

Chalie 

----- Original Message -----

From: "Bob Spidell" <bspidell at comcast.net> 
To: healeys at autox.team.net 
Sent: Wednesday, May 13, 2020 10:17:51 AM 
Subject: Re: [Healeys] BSF Taps and Dies 

My (somewhat limited) experience is that the so-called 'dies' are really 
only thread chasers. If you try to use them to actually thread, say, a 
pipe or rod the die will wander laterally and you won't get a straight 
thread. I don't know if actual 'dies' are available outside a machine 
shop but, probably the only way to get a straight thread is with a lathe. 

On 5/13/2020 6:49 AM, Bob Haskell wrote: 
> 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 
>> 
> 

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