ISO 7049 dimensions — Cross-recessed pan head tapping screws
- Edition
- 2011 edition, current
- Related
- ISO 1478ISO 2702
| Size | PThread pitch | dkHead diameter | kHead height | mType h recess width | rfHead radius | Recess number | Type h penetration | Type h penetration | Type z penetration | Type z penetration | yPoint length — c | daUnderhead diameter | aThread runout | rRadius | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | nom. | min | ref. | ref. | ref. | max | min | max | min | ref. | ref. | ref. | max | max | min | ||||
| ST2.2 | 0.8 | 4 | 3.7 | 1.6 | 1.4 | 1.9 | 2 | 3.2 | 0 | 1.2 | 0.85 | 1.2 | 0.95 | 2 | 1.6 | – | 2.8 | 0.8 | 0.1 |
| ST2.9 | 1.1 | 5.6 | 5.3 | 2.4 | 2.15 | 3 | 3 | 5 | 1 | 1.8 | 1.4 | 1.75 | 1.45 | 2.6 | 2.1 | – | 3.5 | 1.1 | 0.1 |
| ST3.5 | 1.3 | 7 | 6.64 | 2.6 | 2.35 | 3.9 | 4 | 6 | 2 | 1.9 | 1.4 | 1.9 | 1.5 | 3.2 | 2.5 | 2.7 | 4.1 | 1.3 | 0.1 |
| ST4.2 | 1.4 | 8 | 7.64 | 3.1 | 2.8 | 4.4 | 4.4 | 6.5 | 2 | 2.4 | 1.9 | 2.35 | 1.95 | 3.7 | 2.8 | 3.2 | 4.9 | 1.4 | 0.2 |
| ST4.8 | 1.6 | 9.5 | 9.14 | 3.7 | 3.4 | 4.9 | 4.8 | 8 | 2 | 2.9 | 2.4 | 2.75 | 2.3 | 4.3 | 3.2 | 3.6 | 5.6 | 1.6 | 0.2 |
| ST5.5 | 1.8 | 11 | 10.57 | 4 | 3.7 | 6.4 | 6.2 | 9 | 3 | 3.1 | 2.6 | 3 | 2.55 | 5 | 3.6 | 4.3 | 6.3 | 1.8 | 0.25 |
| ST6.3 | 1.8 | 12 | 11.57 | 4.6 | 4.3 | 6.9 | 6.8 | 10 | 3 | 3.6 | 3.1 | 3.5 | 3.05 | 6 | 3.6 | 5 | 7.3 | 1.8 | 0.25 |
| ST8 | 2.1 | 16 | 15.57 | 6 | 5.6 | 9 | 8.9 | 13 | 4 | 4.7 | 4.15 | 4.5 | 4.05 | 7.5 | 4.2 | 6.3 | 9.2 | 2.1 | 0.4 |
| ST9.5 | 2.1 | 20 | 19.48 | 7.5 | 7.1 | 10.1 | 10.1 | 16 | 4 | 5.8 | 5.2 | 5.7 | 5.25 | 8 | 4.2 | – | 10.7 | 2.1 | 0.4 |
Dimensions from ISO 7049:2011, the current edition.