1/16 NPT Thread Specs
Standard: ASME B1.20.1 (NPT)
Technical parameters and design data for the 1/16 NPT pipe thread.
Established under standard ASME B1.20.1, this thread uses a pitch of 0.03704 inches and has 27 threads per inch.
Often used in fluid, hydraulic, or pneumatic systems, NPT/BSP threads require suitable thread sealants to assure leak-tight performance.
Dimensional Specifications
Size Designation
1/16 NPT
Nominal Diameter
0.3125 in(7.94 mm)
Major Diameter
0.3695 in(9.39 mm)
TPI (Threads per Inch)
27
Pitch
0.03704 in
Pitch Diameter
0.3454 in(8.77 mm)
Minor Diameter
0.3294 in(8.37 mm)
Tap Drill size
C in
Quick Unit Converter
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Frequently Asked Questions
What is the tap drill size for 1/16 NPT pipe thread?
The recommended tap drill size for a 1/16 NPT pipe thread is C inches.
What is the major diameter of a 1/16 NPT pipe thread?
For a standard 1/16 NPT pipe thread, the major diameter at the pipe reference plane is 0.3695 inches (approx. 9.39 mm).