Whitworth Tapered Pipe Thread DIN EN 10226-1, DIN EN 10226-2 formerly known as DIN 2999
BSPT (British Standard Tapered Pipe)
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- ISO Coarse Thread (metric) DIN 13-1
- ISO Fine Thread I (metric) DIN 13-2
- ISO Fine Thread II (metric) DIN 13-3
- ISO Fine Thread III (metric) DIN 13-4
- ISO Fine Thread IV (metric) DIN 13-5
- ISO Fine Thread V (metric) DIN 13-6
- ISO Fine Thread VI (metric) DIN 13-7
- ISO Fine Thread VII (metric) DIN 13-8
- ISO Fine Thread VIII (metric) DIN 13-9
- ISO Fine Thread IX (metric) DIN 13-10
- ISO Fine Thread X (metric) DIN 13-11
- ISO Thread (metric)
DIN 14-2 - Knuckle Thread DIN 405
- Knuckle Thread
DIN 20400 - Buttress Fine Thread DIN 514
- Buttress Coarse Thread DIN 513
- Buttress Thread 45°
DIN 2781 - Trapezoidal Fine Thread DIN 103
- Trapezoidal Coarse Thread DIN 103
- Valve Thread DIN 7756
- Cycle Thread DIN 79012
- PG Thread DIN 40430
- Pipe Thread DIN 158
- Dairy Thread DIN 11851
- Edison Thread
DIN 40400 - Glass Thread DIN 40450
- Knuckle Thread for glass containers DIN 168
- Threads for plastic containers DIN 6063
- Camera mount Thread
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- Bodmer Thread
- French Thread
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- Whitworth Fine DIN 239
- Whitworth Fine DIN 240
- Whitworth Fine
DIN LON 282 - Whitworth Fine
DIN LON special - Whitworth Fine
DIN LON 286 - Whitworth Fine
DIN LON 287 - S. J. Thread
- Sellers Thread
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- ME Model Engineer Thread (GB)
- BA British Association (GB)
- BSB British Standard Brass (GB)
- BSF Whitworth Fine Thread (GB)
- BSW Whitworth Coarse Thread (GB)
- BSPP Whitworth Pipe Thread (GB)
- ► BSPT Tapered
Whitworth Pipe
Thread (GB) DIN EN
10226 DIN 2999 - Conversion Inch-Fractions to mm
- Conversion TPI to pitch mm
- Drill bit sizes
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Whitworth Pipe Thread for pipes and fittings. Parallel female thread and tapered male thread (taper 1 : 16).
An appropriate sealing compound can be used in the thread to ensure a leak-proof joint.
The flank angle is 55°.
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| Male Thread Diameter | Female Thread Diameter | Pipe Minor Diameter mm | Pipe Major Diameter mm | Tapping Drill Size mm | TPI | Pitch mm |
| R 1/16" | Rp 1/16" | 3 | 7.723 | 6.561 | 28 | 0.907 |
| R 1/8" | Rp 1/8" | 6 | 9.728 | 8.566 | 28 | 0.907 |
| R 1/4" | Rp 1/4" | 8 | 13.157 | 11.445 | 19 | 1.337 |
| R 3/8" | Rp 3/8" | 10 | 16.662 | 14.950 | 19 | 1.337 |
| R 1/2" | Rp 1/2" | 15 | 20.955 | 18.631 | 14 | 1.814 |
| R 3/4" | Rp 3/4" | 20 | 26.441 | 24.117 | 14 | 1.814 |
| R 1" | Rp 1" | 25 | 33.249 | 30.291 | 11 | 2.309 |
| R 1 1/4" | Rp 1 1/4" | 32 | 41.910 | 38.952 | 11 | 2.309 |
| R 1 1/2" | Rp 1 1/2" | 40 | 47.803 | 44.845 | 11 | 2.309 |
| R 2" | Rp 2" | 50 | 59.614 | 56.656 | 11 | 2.309 |
| R 2 1/2" | Rp 2 1/2" | 65 | 75.184 | 72.226 | 11 | 2.309 |
| R 3" | Rp 3" | 80 | 87.884 | 84.926 | 11 | 2.309 |
| R 4" | Rp 4" | 100 | 113.030 | 110.072 | 11 | 2.309 |
| R 5" | Rp 5" | 125 | 138.430 | 135.472 | 11 | 2.309 |
| R 6" | Rp 6" | 150 | 163.830 | 160.872 | 11 | 2.309 |
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