I can tell you what it ain't.  Not 14X1.25mm nor 3/8" pipe.  Somewhere in
between!!
But it's so close to 3/8" pipe that I think you can easily open it up
with a pipe tap.
Paul
PAsgeirsson@juno.com
On Mon, 15 Feb 99 14:07:14 PST "David Ramsey" <dwramsey@worldnet.att.net>
writes:
>I guess nobody who knows saw this so though I would resend 
>it.............Help
>               Crash
>
>----------
>> Date: Saturday, February 13, 1999 19:09:13
>> From: dwramsey
>> To: spridgets@autox.team.net
>> Subject: Water temp sending unit threads?
>>
>> Can anybody tell me the size of the tap I'll need to rethread the 
>hole in the
>> head for the water temp sending unit.  I'm going to a crossflow 
>radiator and
>> have to move the unit to the head.  I did get the plug out of the 
>head that
>> had been in there for 35 years, but will need to clean the threads.
>>              Crash
>
>
>
 
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