BSB British Standard Brass
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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
- 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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BSB British Standard Brass Thread. Used brass tubing. BSB has a 26 TPI pitch through the whole range.
The flank angle is 55°.
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| Nominal Diameter | Diameter Inch | Diameter mm | Tapping Drill Size mm | TPI | Pitch mm |
| BSB 1/8" | 0.125 | 3.175 | 1.923 | 26 | 0.977 |
| BSB 1/4" | 0.250 | 5.556 | 5.098 | 26 | 0.977 |
| BSB 3/8" | 0.375 | 9.525 | 8.273 | 26 | 0.977 |
| BSB 1/2" | 0.500 | 12.700 | 11.448 | 26 | 0.977 |
| BSB 5/8" | 0.625 | 15.875 | 14.369 | 26 | 0.977 |
| BSB 3/4" | 0.750 | 19.050 | 17.798 | 26 | 0.977 |
| BSB 7/8" | 0.875 | 22.225 | 20.973 | 26 | 0.977 |
| BSB 1" | 1.000 | 25.400 | 24.148 | 26 | 0.977 |
| BSB 1 1/8" | 1.500 | 28.575 | 27.323 | 26 | 0.977 |
| BSB 1 1/4" | 1.250 | 31.750 | 30.498 | 26 | 0.977 |
| BSB 1 1/2" | 1.500 | 38.100 | 36.848 | 26 | 0.977 |
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