
| Unit:mm | ||||
| Major Diameter | Pitch Diameter | Minor Diameter | ||
| Size | Basic Size | Basic Size | Basic Size | |
| BC | 5/16- 26 | 7.94 | 7.42 | 6.90 |
| BC | 3/8- 26 | 9.53 | 9.01 | 8.49 |
| BC | 7/16- 26 | 11.11 | 10.59 | 10.07 |
| BC | 1/2- 20 | 12.70 | 12.02 | 11.34 |
| BC | 9/16- 20 | 14.29 | 13.61 | 12.93 |
| BC | 5/8- 20 | 15.88 | 15.20 | 14.52 |
| BC | 11/16- 24 | 17.46 | 16.90 | 16.34 |
| BC | 3/4- 30 | 19.05 | 18.60 | 18.15 |
| BC | 31/32- 30 | 24.61 | 24.16 | 23.71 |
| BC | 1 - 24 | 25.40 | 24.84 | 24.28 |
| BC | 1.29 - 24 | 32.77 | 32.21 | 31.65 |
| BC | 1.37 - 24 | 34.80 | 34.24 | 33.68 |
| BC | 17/16- 24 | 36.51 | 35.95 | 35.39 |
| BC | 1.45 - 24 | 36.83 | 36.27 | 35.71 |
| BC | 19/16- 24 | 39.69 | 39.13 | 38.57 |
| r urop | an | arae | pe | reas | () | Unit:mm | |
| Major Diameter | Pitc | h Diame | ter | Minor Diameter | |||
| Size | Class | Basic Size | Basic Size | Upper Tolerance ( μ m) + | Lower Tolerance ( μ m) + | Basic Size | |
| G | 1/8- 28 | - | 9.728 | 9.147 | 43 | 21 | 8.566 |
| G | 1/4- 19 | - | 13.157 | 12.301 | 50 | 25 | 11.445 |
| G | 3/8- 19 | - | 16.662 | 15.806 | 50 | 25 | 14.950 |
| G | 1/2- 14 | - | 20.955 | 19.793 | 57 | 28 | 18.631 |
| G | 5/8- 14 | - | 22.911 | 21.749 | 57 | 28 | 20.587 |
| G | 3/4- 14 | - | 26.441 | 25.279 | 57 | 28 | 24.117 |
| G | 7/8- 14 | - | 30.201 | 29.039 | 57 | 28 | 27.877 |
| G | 1 - 11 | - | 33.249 | 31.770 | 72 | 36 | 30.291 |
| G | 11/4 - 11 | - | 41.910 | 40.431 | 72 | 36 | 38.952 |
| G | 11/2 - 11 | - | 47.803 | 46.324 | 72 | 36 | 44.845 |
| or Size | re Class | s Major Diameter Basic Size | Pitc Basic Size | h Diamet Upper Tolerance ( μ m) + | er Lower Tolerance ( μ m) + | Unit:mm Minor Diameter Basic Size | or uro Size | ean Class | ee Major Diameter Basic Size | onu Pit Basic Size | rea ch Diamet Upper Tolerance ( μ m) + | s (g) er Lower Tolerance ( μ m) + | Unit:mm Minor Diameter Basic Size |
| 3/32 BSW 48 | - | 2.381 | 2.042 | 32 | 15 | 1.704 | Pg 7 - 20 | - | 12.50 | 11.89 | 60 | 30 | 11.28 |
| 1/8 BSW 40 | - | 3.175 | 2.768 | 35 | 15 | 2.362 | Pg 9 - 18 | - | 15.20 | 14.53 | 60 | 30 | 13.86 |
| 5/32 BSW 32 | - | 3.969 | 3.460 | 40 | 18 | 2.952 | Pg 11 - 18 | - | 18.60 | 17.93 | 60 | 30 | 17.26 |
| 3/16 BSW 24 | - | 4.762 | 4.085 | 44 | 21 | 3.407 | Pg 13.5 - 18 | - | 20.40 | 19.73 | 60 | 30 | 19.06 |
| 7/32 BSW 24 | - | 5.556 | 4.879 | 44 | 21 | 4.201 | Pg 16 - 18 | - | 22.50 | 21.83 | 60 | 30 | 21.16 |
| 1/4 BSW 20 | - | 6.350 | 5.537 | 46 | 23 | 4.724 | Pg 21 - 16 | - | 28.30 | 27.54 | 100 | 50 | 26.78 |
| 5/16 BSW 18 | - | 7.938 | 7.034 | 49 | 23 | 6.130 | Pg 29 - 16 | - | 37.00 | 36.24 | 100 | 50 | 35.48 |
| 3/8 BSW 16 | - | 9.525 | 8.509 | 51 | 25 | 7.493 | |||||||
| 7/16 BSW 14 | - | 11.112 | 9.950 | 56 | 28 | 8.788 | |||||||
| 1/2 BSW 12 | - | 12.700 | 11.345 | 61 | 30 | 9.990 | |||||||
| 9/16 BSW 12 | - | 14.288 | 12.933 | 61 | 30 | 11.578 | ■for Micro | scop | e Obje | ctive T | hreads | Unit:mm | |
| 5/8 BSW 11 | - | 15.875 | 14.396 | 63 | 30 | 12.917 | Major Diameter | Pit | ch Diamet | er | Minor Diameter | ||
| 3/4 BSW 10 | - | 19.050 | 17.424 | 69 | 33 | 15.798 | Size | Class | Basic | Basic | Upper Tolerance | Lower Tolerance | Basic |
| 7/8 BSW 9 | - | 22.225 | 20.418 | 69 | 33 | 18.611 | Size | Size | ( μ m) + | ( μ m) + | Size | ||
| 1 BSW 8 | - | 25.400 | 23.367 | 74 | 36 | 21.334 | 20.32W36 | - | 20.320 | 19.868 | 38 | 23 | 19.416 |
Technical Inf