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Not sure what threads were used however 40 years ago, I did use a NPT
(1/8 inch ??) brass fitting for an oil line on a TR6 engine as I was
not aware there were any other threads than NPT. Do not recall any oil
leaks at the fitting. The brass is probably soft enough to work with
some teflon tape as the oil pressure is not that high. A straight thread
requires a gasket to seal.
Larry T
from this website
www.hydraulicsdirect.com/ID-british-thread-s/2376.htm?gclid=EAIaIQobChMI8JT-4qKI6wIVih-tBh2VSA6QEAAYAiAAEgI6ifD_BwE
How to ID British Threads
British Pipe Standard fittings are amongst the most popular of all
foreign threads in the world today. These threads come in two versions:
parallel (BSPP), and tapered (BSPT). The thread flank angle for both
tapered and parallel British threads is 55°. NOTE: It is a fairly common
mistake to identify a BSPT (tapered) as an NPT. Always remember that NPT
threads have a 60° thread flank angle, and BSPT has a 55° angle (this
can be verified with a thread gauge). Although BSP is a foreign thread,
it isnâ??t actually metric. This is why it comes in Imperial sizes: 1/8,
1/4, 1/2, 3/4, and so on.
I get confused with standards and threads used on Triumphs.
Does the oil pressure sender use NPT (*American National Standard Pipe
Thread) *or some British equivalent? I'm planning to install a Smith's
oil pressure gauge, but want to keep the sensor. I need a Tee but notice
some have what appears to be parallel (maybe NPS) threads. Can NPT and
NPS be mixed? Sujit
-- Sujit Roy Cupertino, California
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<p>Not sure what threads were used however 40 years ago, I did use a
NPT (1/8 inch ??) brass fitting for an oil line on a TR6 engine
as I was not aware there were any other threads than NPT. Do not
recall any oil leaks at the fitting. The brass is probably soft
enough to work with some teflon tape as the oil pressure is not
that high. A straight thread requires a gasket to seal.</p>
<p>Larry T<br>
</p>
<p>from this website Â
<a class="moz-txt-link-abbreviated"
href="http://www.hydraulicsdirect.com/ID-british-thread-s/2376.htm?gclid=EAIaIQobChMI8JT-4qKI6wIVih-tBh2VSA6QEAAYAiAAEgI6ifD_BwE";>www.hydraulicsdirect.com/ID-british-thread-s/2376.htm?gclid=EAIaIQobChMI8JT-4qKI6wIVih-tBh2VSA6QEAAYAiAAEgI6ifD_BwE</a><br>
</p>
<h1>How to ID British Threads</h1>
<p>British Pipe Standard fittings are amongst the most popular of
all foreign threads in the world today. These threads come in two
versions: parallel (BSPP), and tapered (BSPT). The thread flank
angle for both tapered and parallel British threads is 55°. NOTE:
It is a fairly common mistake to identify a BSPT (tapered) as an
NPT. Always remember that NPT threads have a 60° thread flank
angle, and BSPT has a 55° angle (this can be verified with a
thread gauge). Although BSP is a foreign thread, it isnâ??t actually
metric. This is why it comes in Imperial sizes: 1/8, 1/4, 1/2,
3/4, and so on.</p>
<p><br>
</p>
<p>I get confused with standards and threads used on Triumphs.</p>
<p>Does the oil
pressure sender use NPT (*American National Standard Pipe Thread)
*or some
British equivalent?
I'm planning to install a Smith's oil pressure gauge, but want to
keep
the sensor. I need a Tee but notice some have what appears to be
parallel
(maybe NPS) threads. Can NPT and NPS be mixed?
Sujit
</p>
<div class="moz-txt-sig">-- Sujit Roy
Cupertino, California</div>
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