Whitworth Coarse Thread BS 84
BSW (British Standard Whitworth)
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- Specifications
- 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
- S. & H. Thread
- Sewing-machine Thread
- C. E. I. Thread
- Löwenherz Thread
- Bodmer Thread
- French Thread
- VDI Thread
- Ducommun Steinle Thread
- Hamann Patronen Thread
- Thury Thread
- Whitworth Instrument Thread
- 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
- UNC Thread (USA)
- UNEF Thread (USA)
- UNF Thread (USA)
- UNM Thread (USA)
- UNR Thread (USA)
- UNS Thread (USA)
- 8-UN Thread (USA)
- 12-UN Thread (USA)
- 16-UN Thread (USA)
- 20-UN Thread (USA)
- NPT Thread (USA)
- NPTF Thread (USA)
- NPSC Thread (USA)
- NPSF Thread (USA)
- NPSL Thread (USA)
- NPSM Thread (USA)
- ACME Thread (USA)
- STUB ACME Thread (USA)
- Sharp V Thread (USA)
- 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)
- Conversion Inch-Fractions to mm
- Conversion TPI to pitch mm
- Drill bit sizes
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British Standard Whitworth Coarse Thread Series (parallel, cylindrical)
In GB most common Thread. Corresponds to the Metric Thread in its type of use.
The flank angle is 55°.
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| Nominal Diameter | Major Diameter Inch | Major Diameter mm | Tapping Drill Size mm | TPI | Pitch mm |
| W 1/16" | 1/16 | 1.588 | 1.05 | 60 | 0.423 |
| W 3/32" | 3/32 | 2.381 | 1.70 | 48 | 0.529 |
| W 1/8" | 1/8 | 3.175 | 2.36 | 40 | 0.635 |
| W 5/32" | 5/32 | 3.969 | 2.95 | 32 | 0.794 |
| W 3/16" | 3/16 | 4.763 | 3.41 | 24 | 1.058 |
| W 7/32" | 7/32 | 5.556 | 4.20 | 24 | 1.058 |
| W 1/4" | 1/4 | 6.350 | 4.72 | 20 | 1.270 |
| W 5/16" | 5/16 | 7.940 | 6.13 | 18 | 1.411 |
| W 3/8" | 3/8 | 9.525 | 7.49 | 16 | 1.587 |
| W 7/16" | 7/16 | 11.113 | 8.79 | 14 | 1.814 |
| W 1/2" | 1/2 | 12.700 | 9.99 | 12 | 2.117 |
| W 9/16" | 9/16 | 14.288 | 11.58 | 12 | 2.117 |
| W 5/8" | 5/8 | 15.875 | 12.92 | 11 | 2.309 |
| W 3/4" | 3/4 | 19.050 | 15.80 | 10 | 2.540 |
| W 7/8" | 7/8 | 22.225 | 18.61 | 9 | 2.822 |
| W 1" | 1 | 25.400 | 21.34 | 8 | 3.175 |
| W 1 1/8" | 1 1/8 | 28.575 | 23.93 | 7 | 3.628 |
| W 1 1/4" | 1 1/4 | 31.750 | 27.11 | 7 | 3.628 |
| W 1 3/8" | 1 3/8 | 34.925 | 29.51 | 6 | 4.233 |
| W 1 1/2" | 1 1/2 | 38.100 | 32.68 | 6 | 4.233 |
| W 1 5/8" | 1 5/8 | 41.275 | 34.77 | 5 | 5.080 |
| W 1 3/4" | 1 3/4 | 44.450 | 37.95 | 5 | 5.080 |
| W 1 7/8" | 1 7/8 | 47.625 | 40.40 | 4.5 | 5.644 |
| W 2" | 2 | 50.800 | 43.58 | 4.5 | 5.644 |
| W 2 1/4" | 2 1/2 | 57.150 | 49.02 | 4 | 6.350 |
| W 2 1/2" | 2 1/2 | 63.500 | 55.37 | 4 | 6.350 |
| W 2 3/4" | 2 3/4 | 69.850 | 60.56 | 3.5 | 7.257 |
| W 3" | 3 | 76.200 | 66.91 | 3.5 | 7.257 |
| W 3 1/4" | 3 1/4 | 82.550 | 72.55 | 3.25 | 7.815 |
| W 3 1/2" | 3 1/2 | 88.900 | 78.90 | 3.25 | 7.815 |
| W 3 3/4" | 3 3/4 | 95.250 | 84.41 | 3 | 8.467 |
| W 4" | 4 | 101.600 | 90.76 | 3 | 8.467 |
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