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Calculate NPT thread dimensions according to ANSI/ASME B1.20.1 standard. Enter nominal pipe size, threads per inch and thread series symbol to get outer diameter, pitch, engagement length, wrench makeup and more.
The Thread Calculator App provides the following basic parameters for NPT pipe threads: Nominal Pipe Size. Pipe Outside Diameter. Pitch in TPI & Distance. Thread Tapper Angle. Thread V half Angle. Height of sharp V & Thread height. Pitch Diameter & Minor Diameter at the Pipe’s endpoint. Length & Pitch diameter of Hand-Tight Engagement.
NPT Thread Chart for basic dimensions of general purpose NPT pipe threads (inch) according to ANSI/ASME B1.20.1 standard.
Get all the dimensions for NPT threads using our free NPT and Pipe Thread Calculator. This NPT Calculator makes thread dimensions easy.
Thread Calculator and Chart for metric thread, npt thread, bsp thread, unf thread, unc thread, acme thread, bspp thread, un thread, bspt thread, pipe thread, stub acme thread and buttress thread. UN thread chart and calculator
The Jargon, calculations, and charts that define NPT threads are very different compared with standard metric and inch threads. This webpage will explain the difference between the various series, how each parameter is defined, and show how to find the correct basic dimensions and tolerances for each thread.
National Standard Taper Pipe Threads Size NPT Chart - Includes both External and internal Pipe Thread Data. The taper rate for all NPT threads is 1⁄16 (3⁄4 inch per foot) measured by the change of diameter (of the pipe thread) over distance.
