ThreadRef

Sizes · Pipe (NPT / BSPT / BSPP)

BSPT (R) — British tapered pipe

2-11 BSPT

2-11 BSPT pipe thread: 11 TPI, major Ø 59.614 mm.

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Tap drill
56.5 mm
59.614 mm major Ø

Profile

Thread form & key diameters

Major Ø 59.614 mmP 2.309 mm55°Root Ø 56.781 mm · Pitch Ø 58.114 mm2-11 BSPT11 TPI · 55° form

Dimensions

Designation2-11 BSPT
Major (outside) diameter59.614 mm · 2.347"
Pitch2.309 mm · 11 TPI
Pitch diameter58.114 mm · 2.288"
Minor diameter (external)56.781 mm · 2.2355"
Minor diameter (internal)57.114 mm · 2.2486"
Recommended tap drill56.5 mm

What tap drill do I need for 2-11 BSPT?

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.

Same diameter

Other 2" BSPT threads

2-11 BSPPTap —Ø 59.614 mm · pitch 2.309 mm

Nearby sizes

More bspt (r) — british tapered pipe threads

1-1/2-11 BSPTTap 44.5 mmØ 47.803 mm · pitch 2.309 mm1-1/4-11 BSPTTap 38.75 mmØ 41.91 mm · pitch 2.309 mm1-11 BSPTTap 30 mmØ 33.249 mm · pitch 2.309 mm3/4-14 BSPTTap 23.75 mmØ 26.441 mm · pitch 1.814 mm1/2-14 BSPTTap 18.25 mmØ 20.955 mm · pitch 1.814 mm3/8-19 BSPTTap 14.75 mmØ 16.662 mm · pitch 1.337 mm1/4-19 BSPTTap 11.2 mmØ 13.157 mm · pitch 1.337 mm1/8-28 BSPTTap 8.4 mmØ 9.728 mm · pitch 0.907 mm