ISO 2009 dimensions — Slotted Countersunk Head Screw
- Edition
- 2011 edition, current
| Size | PThread pitch | dkTheoretical head diameter | kHead height | nSlot width | tSlot depth | bThread length | |
|---|---|---|---|---|---|---|---|
| max | nom. | nominal | min | ||||
| M1.6 | 0.35 | 3 | 3.6 | 1 | 0.4 | 0.32 | 25 |
| M2 | 0.4 | 3.8 | 4.4 | 1.2 | 0.5 | 0.4 | 25 |
| M2.5 | 0.45 | 4.7 | 5.5 | 1.5 | 0.6 | 0.5 | 25 |
| M3 | 0.5 | 5.5 | 6.3 | 1.65 | 0.8 | 0.6 | 25 |
| M3.5 | 0.6 | 7.3 | 8.2 | 2.35 | 1 | 0.9 | 38 |
| M4 | 0.7 | 8.4 | 9.4 | 2.7 | 1.2 | 1 | 38 |
| M5 | 0.8 | 9.3 | 10.4 | 2.7 | 1.2 | 1.1 | 38 |
| M6 | 1 | 11.3 | 12.6 | 3.3 | 1.6 | 1.2 | 38 |
| M8 | 1.25 | 15.8 | 17.3 | 4.65 | 2 | 1.8 | 38 |
| M10 | 1.5 | 18.3 | 20 | 5 | 2.5 | 2 | 38 |
Dimensions from ISO 2009:2011, the current edition.