[time-nuts] 1" 14 tpi UNS die

[Arnold Tibus]

I have the same problem with several GPS antennas, a Quadrifilar from Raytheon, 
Irvine 2640NW with mounting base, HP 58532A with mounting base, 
HP 58504Ac. etc. Some complete boxes from HP do contain an adapter.
So this thread is definitively a kind of standard. The thread is fully
cylindrical, all the plumbers tubes do use conical threads which are not 
compatible. Very difficult to find proper solution in the metrical Europe.
If I would find a source of that HP-adapters I would buy 4 units.
I did not check for the correct naming of this thread though.

regards
Arnold



On Tue, 7 Jul 2009 15:23:42 +0100, David C. Partridge wrote:

>I think it is also known as 3/4" NPT for a pipe with a nominal OD of 1.05" 

>Dave

>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of David C. Partridge
>Sent: 07 July 2009 14:54
>To: 'Discussion of precise time and frequency measurement'
>Subject: Re: [time-nuts] 1" 14 tpi UNS die

>This is the standard Marine antenna mount I believe.

>Dave 

>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of David C. Partridge
>Sent: 07 July 2009 14:47
>To: 'Discussion of precise time and frequency measurement'
>Subject: Re: [time-nuts] 1" 14 tpi UNS die

><http://pewa.panasonic.com/emp/products/gps_pdf/vic100.pdf> is where I got
>the specification for the thread from.

>Pipe has O.D. of 1".

>Dave 

>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of Chuck Harris
>Sent: 07 July 2009 13:57
>To: Discussion of precise time and frequency measurement
>Subject: Re: [time-nuts] 1" 14 tpi UNS die

>Ok, I will try this from a different angle.

>1" - 14TPI UNS thread like you described are very rare outside of the large
>machine industry.  They are used for things like bolts on tractors.  I have
>a pretty big doubt that it has any application in a GPS antenna.

>US pipe thread in the sizes 1/2", 3/4", and 1" are 14TPI, they are not "1.0
>inch" in any dimension, however.

>It is pretty common to use standard pipe fittings in antenna work.

>So how did you arrive at needing a 1"-14TPI UNS die?

>-Chuck Harris

>David C. Partridge wrote:
>> Panasonic VIC-100 GPS antenna ...
>> 
>> Dave
>> 
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]
>> On Behalf Of Chuck Harris
>> Sent: 07 July 2009 13:07
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] 1" 14 tpi UNS die
>> 
>> I don't recognize the size you are asking for.  What is your application?
>> 
>> -Chuck Harris
>> 
>> David C. Partridge wrote:
>>> Does anyone (preferably in the UK) have 1.0-14UNS-2A thread cutting 
>>> die they would be prepared to lend me (preferably a die nut type as I 
>>> don't have a die stock)?
>>>
>>> Thanks
>>> David Partridge

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