national_pipe_thread

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 <h1><font size="4">National Pipe Thread (NPT)</font></h1>
 <p> </p>
 <ul>
 <li>Thread angle : 60 degrees</li>
 <li>Tapered thread 1<sup>o</sup> 47', or 1/16 inch per inch</li>
 <li>Pitch is measured in Threads Per Inch (TPI)</li>
 </ul>
 <p> </p>
 <p><img src="http://www.com-fit.com/image/threadinfo.gif" alt=""></p>
 <p> </p>
 <h1>See Also</h1>
 <p><a href=
 "http://en.wikipedia.org/wiki/National_pipe_thread">Wikipedia</a></p>
 <p><a href=
 "http://www.engineeringtoolbox.com/npt-national-pipe-taper-threads-d_750.html">Engineering
 Tool Box</a></p>
 <p> </p>
 <p> </p>