Pipe Threads - NPT VS BSPT VS Universal

Here's some handy charts for matching unknown pipe threads to their size:
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www.mcmaster.com/4347KAC/
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0:00 Comparison
0:19 Universal Thread
0:32 National Pipe Tapered (NPT)
0:34 British Standard Pipe Tapered (BSPT)
1:20 NPT in a BSPT tapped hole

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