Note that both NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However, NPT threads are tapered and NPS threads are straight (parallel). Both threads have a 60° included angle and flat peaks and valleys.
Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.
Thread data - metric, unified, ACME and others.
NPT and NPTF pipe threads - dimensions according ANSI/ASME B1.20.1/3.
British Brass Thread is an imperial unit based screw thread.
British Standard Cycle is a British Imperial screw thread standard.
BSPT - British Standard Pipe Taper threads & BSP or BSPF - British Standard Pipe Parallel (Straight) threads.
Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads.
Metric threads spark plugs according ISO 28741.
Pressure-tight joints made on the pipe threads.
Dimensions of metric threads according ISO 724.
NPT - Briggs Standard Pipe threads - Taps and Drill Sizes.
Applied threaded standards used for piping connections.
Piping thread standards.
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