
Metric Fine Threads (MF) Unit: mm Miniature threads (S) Unit: mm
SP
| Size | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size | |||
| MF | 76 | × | 2 | 74.210 | 73.835 | 74.00 | 74.10 |
| MF | 76 | × | 1.5 | 74.676 | 74.376 | 74.50 | 74.60 |
| MF | 78 | × | 2 | 76.210 | 75.835 | 76.00 | 76.10 |
| MF | 80 | × | 4 | 76.270 | 75.670 | 76.00 | 76.10 |
| MF | 80 | × | 3 | 77.252 | 76.752 | 77.00 | 77.10 |
| MF | 80 | × | 2 | 78.210 | 77.835 | 78.00 | 78.10 |
| MF | 80 | × | 1.5 | 78.676 | 78.376 | 78.50 | 78.60 |
| MF | 82 | × | 2 | 80.210 | 79.835 | 80.00 | 80.10 |
| MF | 85 | × | 4 | 81.270 | 80.670 | 81.00 | 81.10 |
| MF | 85 | × | 3 | 82.252 | 81.752 | 82.00 | 82.10 |
| MF | 85 | × | 2 | 83.210 | 82.835 | 83.00 | 83.10 |
| MF | 90 | × | 4 | 86.270 | 85.670 | 86.00 | 86.10 |
| MF | 90 | × | 3 | 87.252 | 86.752 | 87.00 | 87.10 |
| MF | 90 | × | 2 | 88.210 | 87.835 | 88.00 | 88.10 |
| MF | 95 | × | 4 | 91.270 | 90.670 | 91.00 | 91.10 |
| MF | 95 | × | 3 | 92.252 | 91.752 | 92.00 | 92.10 |
| MF | 95 | × | 2 | 93.210 | 92.835 | 93.00 | 93.10 |
| MF | 100 | × | 4 | 96.270 | 95.670 | 96.00 | 96.10 |
| MF | 100 | × | 3 | 97.252 | 96.752 | 97.00 | 97.10 |
| MF | 100 | × | 2 | 98.210 | 97.835 | 98.00 | 98.10 |
| Size | Recommended Hole Size | |||
| S | 0.4 | X | 0.1 | 0.32 |
| S | 0.5 | X | 0.125 | 0.41 |
| S | 0.6 | X | 0.15 | 0.49 |
| S | 0.7 | X | 0.175 | 0.57 |
| S | 0.8 | X | 0.2 | 0.65 |
| S | 0.9 | X | 0.225 | 0.73 |
Unified Coarse Threads (UNC) Unit: mm Unified Fine Threads (UNF) Unit: mm
| Siz | e | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size | Size | Minor D Max. | iameter Min. | Drill Size | Recommended Hole Size | ||
| No. 1 | - | 64 UNC | 1.582 | 1.425 | 1.55 | 1.54 | No. 0 - | 80 UNF | 1.305 | 1.182 | 1.25 | 1.27 |
| No. 2 | - | 56 UNC | 1.871 | 1.695 | 1.80 | 1.83 | No. 1 - | 72 UNF | 1.612 | 1.474 | 1.55 | 1.58 |
| No. 3 | - | 48 UNC | 2.146 | 1.941 | 2.10 | 2.09 | No. 2 - | 64 UNF | 1.912 | 1.756 | 1.85 | 1.87 |
| No. 4 | - | 40 UNC | 2.385 | 2.157 | 2.30 | 2.33 | No. 3 - | 56 UNF | 2.197 | 2.025 | 2.10 | 2.15 |
| No. 5 | - | 40 UNC | 2.697 | 2.487 | 2.60 | 2.64 | No. 4 - | 48 UNF | 2.458 | 2.271 | 2.40 | 2.41 |
| No. 6 | - | 32 UNC | 2.895 | 2.642 | 2.80 | 2.83 | No. 5 - | 44 UNF | 2.740 | 2.551 | 2.70 | 2.69 |
| No. 8 | - | 32 UNC | 3.530 | 3.302 | 3.40 | 3.47 | No. 6 - | 40 UNF | 3.022 | 2.820 | 2.90 | 2.97 |
| No. 10 | - | 24 UNC | 3.962 | 3.683 | 3.90 | 3.89 | No. 8 - | 36 UNF | 3.606 | 3.404 | 3.50 | 3.55 |
| No. 12 | - | 24 UNC | 4.597 | 4.344 | 4.50 | 4.53 | No. 10 - | 32 UNF | 4.165 | 3.963 | 4.10 | 4.12 |
| 1/4 | - | 20 UNC | 5.257 | 4.979 | 5.10 | 5.19 | No. 12 - | 28 UNF | 4.724 | 4.496 | 4.60 | 4.67 |
| 5/16 | - | 18 UNC | 6.731 | 6.401 | 6.60 | 6.65 | 1/4 - | 28 UNF | 5.588 | 5.360 | 5.50 | 5.53 |
| 3/8 | - | 16 UNC | 8.153 | 7.798 | 8.00 | 8.07 | 5/16 - | 24 UNF | 7.035 | 6.782 | 6.90 | 6.97 |
| 7/16 | - | 14 UNC | 9.550 | 9.144 | 9.40 | 9.45 | 3/8 - | 24 UNF | 8.636 | 8.382 | 8.50 | 8.57 |
| 1/2 | - | 13 UNC | 11.023 | 10.592 | 10.90 | 10.91 | 7/16 - | 20 UNF | 10.033 | 9.729 | 9.90 | 9.96 |
| 9/16 | - | 12 UNC | 12.446 | 11.989 | 12.20 | 12.33 | 1/2 - | 20 UNF | 11.607 | 11.329 | 11.50 | 11.54 |
| 5/8 | - | 11 UNC | 13.868 | 13.386 | 13.60 | 13.75 | 9/16 - | 18 UNF | 13.081 | 12.751 | 12.90 | 13.00 |
| 3/4 | - | 10 UNC | 16.840 | 16.307 | 16.60 | 16.7 | 5/8 - | 18 UNF | 14.681 | 14.351 | 14.50 | 14.6 |
| 7/8 | - | 9 UNC | 19.761 | 19.177 | 19.60 | 19.61 | 3/4 - | 16 UNF | 17.678 | 17.323 | 17.50 | 17.59 |
| 1 | - | 8 UNC | 22.606 | 21.971 | 22.30 | 22.45 | 7/8 - | 14 UNF | 20.675 | 20.270 | 20.50 | 20.57 |
| 1 1/8 | - | 7 UNC | 25.349 | 24.638 | 25.00 | 25.17 | 1 - | 12 UNF | 23.571 | 23.114 | 23.30 | 23.46 |
| 1“1/4 | - | 7 UNC | 28.524 | 27.813 | 28.20 | 28.35 | 1“1/8 - | 12 UNF | 26.746 | 26.289 | 26.50 | 26.63 |
| 1“3/8 | - | 6 UNC | 31.115 | 30.353 | 30.80 | 30.92 | 1“1/4 - | 12 UNF | 29.921 | 29.464 | 29.60 | 29.81 |
| 1“1/2 | - | 6 UNC | 34.290 | 33.528 | 34.00 | 34.10 | 1“3/8 - | 12 UNF | 33.096 | 32.639 | 32.80 | 32.98 |
| 1“3/4 | - | 5 UNC | 39.827 | 38.964 | 39.50 | 39.61 | 1“1/2 - | 12 UNF | 36.271 | 35.814 | 36.00 | 36.16 |
| 2 | - | 4.5 UNC | 45.593 | 44.679 | 45.20 | 45.37 |
THREADS,