1 8 npt thread dimensions mm NPT stands for National Pipe Tapered threads The basic profile is a 60 truncated triangle similar to the Unified Inch threads UNC UNF The main difference is that the thread profile is tapered at an angle of 1 47
1 58338 0 7068 8 13 1 60130 1 0085 1 4876 1 1 2 1 900 11 5 0 08696 1 79609 0 420 4 83 1 82234 0 7235 8 32 1 84130 1 0252 1 7265 Nom Pipe Size Outer Dia of Pipe TPI Pitch of Thread Ptich Dia at Begining of External Thread Handtight Engagement Effective Thread External Overall Length 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 The angle between the taper and the center axis of the pipe is 1 47 24 1 7899 Commonly used sizes are 1 8 1 4 3 8 1 2 3 4 1 1 1 4 1 1 2 and 2 inch appearing on
1 8 npt thread dimensions mm
1 8 npt thread dimensions mm
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BSP Vs NPT Yuyao Jiayuan Hydraulic Fitting Factory
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Npt Thread Dimensions Chart
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1 The taper rate is 1 in 16 inch 3 4 inch in a foot or 62 5 mm in a meter TPI threads per inch 1 inch 25 4 mm NPT threads are not interchangeable with NPS National Pipe Straight threads Example Typical Designation of NPT thread 1 8 27 NPT NPT threads may look similar to ISO 7 1 threads However ISO Commonly used NPT thread sizes including 1 8 1 4 3 8 1 2 3 4 1 1 1 4 1 1 2 2 2 1 2 3 4 5 and 6 inches can be found on most U S pipes and fittings The thread sizes smaller than 1 8 inch and larger than 6 inches are occasionally used for specific purposes
Thread size Major diameter mm TPI 1 16 27 NPT 7 938 27 1 8 27 NPT 10 287 27 1 4 18 NPT 13 716 18 3 8 18 NPT 17 145 18 1 2 14 NPT 21 336 14 3 4 14 NPT 26 670 14 1 11 NPT 33 401 11 5 2 11 NPT 60 325 11 5 NPSC refers to internal straight or parallel threads that can be used to mate with NPT external taper threads to form pressure tight joints when tightly wrenched with sealant They come in various nominal pipe sizes ranging from 1 8 to 4 inches
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NPT THREAD SIZE PITCH DASH SIZE MALE THREAD MINOR OD FEMALE THREAD ID inch TPI mm inch mm inch 1 8 27 02 9 9 0 39 8 4 0 33 1 4 18 04 13 2 0 52 11 2 0 44 3 8 18 06 16 6 0 65 14 7 0 58 1 2 14 08 20 6 0 81 17 8 0 70 3 4 14 12 26 0 1 02 23 4 0 92 1 11 1 2 16 32 5 1 28 National Standard Taper Pipe NPT Threads Size Chart Nominal size inside diameter Actual OD Threads per inch Length of engagement tightened by hand Hand tight turns Wrench makeup turns Length of effective thread
1 8 27 NPT Internal Fitting Basic Thread Dimensions For interpertations of the terms scroll down to the drawings below the table Property Inch mm Nominal Pipe Size 1 8 Minimum 0 033P for all pitches See table for maximum NPT symbol for the thread series and form i e National American Standard Pipe Taper L 1 Length of normal hand tight engagement This is also the L1 gauge length Longer thread engagement may be used in special applications such as flanges for high
Npt Thread Dimensions Chart
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1 8 npt thread dimensions mm - 1 8 27 NPT Basic Thread Dimensions Pitch minor major diameters depth lead Tolerance range for all applicable classes and much more