| TABLE 1
ISO METRIC COARSE PITCH FIRST PREFERENCE SERIES | |||
| nom. | pitch | stress | hexagon |
| size | area | a/c flats | |
| d | p | As | s |
| mm | mm | mm2 | mm |
| 1.6 | 0.35 | 1.27 | 3.2 |
| 2 | 0.4 | 2.07 | 4 |
| 2.5 | 0.45 | 3.39 | 5 |
| 3 | 0.5 | 5.03 | 5.5 |
| 4 | 0.7 | 8.78 | 7 |
| 5 | 0.8 | 14.2 | 8 |
| 6 | 1 | 20.1 | 10 |
| 8 | 1.25 | 36.6 | 13 |
| 10 | 1.5 | 58.0 | 16 |
| 12 | 1.75 | 84.3 | 18 |
| 16 | 2 | 157 | 24 |
| 20 | 2.5 | 245 | 30 |
| 24 | 3 | 353 | 36 |
| 30 | 3.5 | 561 | 46 |
| 36 | 4 | 817 | 55 |