Aerospace Metric Coarse Threads (MJ) Unit: mm Aerospace Metric Fine Threads (MFJ) Unit: mm
SP
| Size | | | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size |
| MJ | 3 | x | 0.5 | 2.653 | 2.513 | 2.60 | 2.62 |
| MJ | 4 | x | 0.7 | 3.498 | 3.318 | 3.10 | 3.45 |
| MJ | 5 | x | 0.8 | 4.421 | 4.221 | 4.30 | 4.37 |
| MJ | 6 | x | 1 | 5.216 | 5.026 | 5.10 | 5.17 |
| MJ | 8 | x | 1.25 | 6.994 | 6.782 | 6.90 | 6.94 |
| MJ | 10 | x | 1.5 | 8.775 | 8.539 | 8.65 | 8.72 |
| MJ | 12 | x | 1.75 | 10.560 | 10.295 | 10.43 | 10.50 |
| MJ | 16 | x | 2 | 14.351 | 14.051 | 14.20 | 14.30 |
| Size | Minor D | iameter | Drill Size | Recommended Hole Size |
| MJ 8 x 1 | Max. 7.216 | Min. 7.026 | 7.10 | 7.17 |
ST
| Aero | space Siz | nifie e | d Fin | e Threa Minor Di Max. | s (UNJF ameter Min. | ) Drill Size | Unit: mm Recommended Hole Size | ROLL |
| No. | 2 | - 64 | UNJF | 1.902 | 1.799 | 1.86 | 1.88 | CARBIDE |
| No. | 3 | - 56 | UNJF | 2.189 | 2.073 | 2.10 | 2.16 | |
| No. | 4 | - 48 | UNJF | 2.466 | 2.330 | 2.40 | 2.43 | |
| No. | 5 | - 44 | UNJF | 2.763 | 2.614 | 2.70 | 2.73 | |
| No. | 6 | - 40 | UNJF | 3.053 | 2.888 | 3.00 | 3.01 | LONG |
| No. | 8 | - 36 | UNJF | 3.662 | 3.480 | 3.60 | 3.62 | |
| No. | 10 | - 32 | UNJF | 4.254 | 4.054 | 4.20 | 4.20 | |
| No. | 12 | - 28 | UNJF | 4.815 | 4.603 | 4.70 | 4.76 | |
| 1/4 | - 28 | UNJF | 5.661 | 5.467 | 5.60 | 5.61 | HAND |
| 5/16 | - 24 | UNJF | 7.109 | 6.907 | 7.00 | 7.06 | TAPS |
| 3/8 | - 24 | UNJF | 8.679 | 8.494 | 8.60 | 8.63 | |
| 7/16 | - 20 | UNJF | 10.083 | 9.876 | 10.00 | 10.03 | |
| 1/2 | - 20 | UNJF | 11.661 | 11.464 | 11.60 | 11.61 | |
| 9/16 | - 18 | UNJF | 13.121 | 12.914 | 13.00 | 13.07 | EG (STI) |
| 5/8 | - 18 | UNJF | 14.701 | 14.501 | 14.60 | 14.65 | |
| 3/4 | - 16 | UNJF | 17.721 | 17.506 | 17.60 | 17.67 | |
| 7/8 | - 14 | UNJF | 20.706 | 20.460 | 20.60 | 20.64 | SPECIAL |
| 1 | - 12 | UNJF | 23.594 | 23.341 | 23.50 | 23.53 | THREADS |
| | | | | | | | , GAUGES THREAD MILLS |
| Size | | | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size |
| No. | 2 - | 56 | UNJC | 1.859 | 1.743 | 1.81 | 1.83 |
| No. | 3 - | 48 | UNJC | 2.136 | 1.999 | 2.10 | 2.10 |
| No. | 4 - | 40 | UNJC | 2.392 | 2.228 | 2.30 | 2.35 |
| No. | 5 - | 40 | UNJC | 2.722 | 2.558 | 2.60 | 2.68 |
| No. | 6 - | 32 | UNJC | 2.938 | 2.734 | 2.84 | 2.89 |
| No. | 8 - | 32 | UNJC | 3.599 | 3.394 | 3.50 | 3.55 |
| No. | 10 - | 24 | UNJC | 4.064 | 3.795 | 3.93 | 4.00 |
| No. | 12 - | 24 | UNJC | 4.704 | 4.456 | 4.60 | 4.64 |
| 1/4 - | 20 | UNJC | 5.387 | 5.114 | 5.30 | 5.32 |
| 5/16 - | 18 | UNJC | 6.832 | 6.564 | 6.70 | 6.76 |
| 3/8 - | 16 | UNJC | 8.255 | 7.979 | 8.10 | 8.19 |
| 7/16 - | 14 | UNJC | 9.639 | 9.348 | 9.50 | 9.57 |
| 1/2 - | 13 | UNJC | 11.094 | 10.798 | 11.00 | 11.02 |
| 9/16 - | 12 | UNJC | 12.481 | 12.228 | 12.40 | 12.42 |
| 5/8 - | 11 | UNJC | 13.903 | 13.628 | 13.80 | 13.83 |
| 3/4 - | 10 | UNJC | 16.880 | 16.577 | 16.70 | 16.80 |
| 7/8 - | 9 | UNJC | 19.814 | 19.477 | 19.70 | 19.73 |
| 1 - | 8 | UNJC | 22.689 | 22.309 | 22.50 | 22.59 |
Unit: mm
| Size | | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size |
| Pg | 7 - | 20 | 11.43 | 11.28 | 11.40 | 11.45 |
| Pg | 9 - | 18 | 14.01 | 13.86 | 14.00 | 14.10 |
| Pg | 11 - | 18 | 17.41 | 17.26 | 17.30 | 17.35 |
| Pg | 13.5 - | 18 | 19.21 | 19.06 | 19.10 | 19.15 |
| Pg | 16 - | 18 | 21.31 | 21.16 | 21.25 | 21.30 |
| Pg | 21 - | 16 | 27.03 | 26.78 | 27.00 | 27.10 |
| Pg | 29 - | 16 | 35.73 | 35.48 | 35.60 | 35.70 |
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