NPT - American tapered pipe
2-11.5 NPT pipe thread: 11.5 TPI, major Ø 60.33 mm.
Profile
| Designation | 2-11.5 NPT |
|---|---|
| Major (outside) diameter | 60.33 mm · 2.3752" |
| Pitch | 2.209 mm · 11.5 TPI |
| Pitch diameter | 58.895 mm · 2.3187" |
| Minor diameter (external) | 57.62 mm · 2.2685" |
| Minor diameter (internal) | 57.939 mm · 2.2811" |
| Recommended tap drill | 56.36 mm |
Pipe threads are made up to a seal against the mating flanks, not tightened to a bolt preload, so no proof load or tightening-torque figure applies.
The bolt schedule collects the fasteners for one job onto a single sheet - tap drill, wrench size, grade and tightening torque on every line, taken straight from pages like this one. Free schedules hold 3 lines and are saved in this browser only.
2-11.5 NPT is a NPT pipe thread running at 11.5 threads per inch on a 60.33 mm major diameter. NPT is a 60° tapered thread that seals on the flanks; use a tapered reamer after drilling for a full-form thread.
All values are generated from the standard thread formulas (ISO 68-1 / ASME B1.1) and published standard tables - not hand-entered. See the full reference.
Drill 56.36 mm before tapping 2-11.5 NPT. NPT is a 60° tapered thread that seals on the flanks; use a tapered reamer after drilling for a full-form thread.
2-11.5 NPT is tapered. NPT is a 60° tapered thread that seals as the flanks wedge together, normally with thread sealant or PTFE tape.
2-11.5 NPT runs at 11.5 threads per inch, a pitch of 2.209 mm, on a major diameter of 60.33 mm.
No. Pipe threads are made up to a seal against the mating flanks, not tightened to a bolt preload, so no proof load or tightening-torque figure applies.
The pipe this thread runs on
NPS 2 pipe is 2.375 in across the outside whatever the schedule; at standard wall (std) the wall is 0.154 in and the bore 2.067 in.
Full dimensions for the standard wall · every schedule in the chart
Nearby sizes