[time-nuts] 1" 14 tpi UNS die

J. Forster jfor at quik.com
Tue Jul 7 14:54:45 UTC 2009


I think Rigid Metal Electrical Conduit (RMC)  uses similar threads to NPT,
but are not tapered. I mean the thick stuff, not EMT.

-John

==========


> Hi Dave,
>
> That would 3/4 inch NPT (National Pipe Thread).  In the UK it is known
> as "Gas Pipe".  As far as I can tell, it is standard the world over.
>
> There are some differences, that won't matter in your application.  In
> Europe, NPT is frequently not tapered.  This is apparently the result of
> not understanding that tapered pipe thread is self sealing.  As a result,
> there have been all sorts of o-ring jamb nuts and other insane stuff done
> "over there" to try and form a temporary seal... but I digress.
>
> -Chuck Harris
>
> David C. Partridge wrote:
>> <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
>
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