BSPT (R) - British tapered pipe
2-11 BSPT pipe thread: 11 TPI, major Ø 59.614 mm.
Profile
| Designation | 2-11 BSPT |
|---|---|
| Major (outside) diameter | 59.614 mm · 2.347" |
| Pitch | 2.309 mm · 11 TPI |
| Pitch diameter | 58.114 mm · 2.288" |
| Minor diameter (external) | 56.781 mm · 2.2355" |
| Minor diameter (internal) | 57.114 mm · 2.2486" |
| Recommended tap drill | 56.5 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 BSPT is a BSPT pipe thread running at 11 threads per inch on a 59.614 mm major diameter. BSPT (R) is a 55° Whitworth tapered thread that seals on the flanks.
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 56.5 mm before tapping 2-11 BSPT. BSPT (R) is a 55° Whitworth tapered thread that seals on the flanks.
2-11 BSPT is tapered. BSPT (R) is a 55° Whitworth tapered thread that seals as the flanks wedge together, normally with thread sealant or PTFE tape.
2-11 BSPT runs at 11 threads per inch, a pitch of 2.309 mm, on a major diameter of 59.614 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.
Same diameter
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