DIN 7981
DIN 7981 , Cross Recess Pan Head Self-Tapping Screws Standard
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| Size | P | dk max | dk min | k max | k min | r max | Cross Recess No. |
| ST2.2 | 0.8 | 4.2 | 3.9 | 1.8 | 1.55 | 0.3 | 1 |
| ST2.9 | 1.1 | 5.6 | 5.3 | 2.2 | 1.95 | 0.4 | 1 |
| ST3.5 | 1.3 | 6.9 | 6.54 | 2.6 | 2.35 | 0.5 | 2 |
| (ST3.9) | 1.3 | 7.5 | 7.14 | 2.8 | 2.55 | 0.5 | 2 |
| ST4.2 | 1.4 | 8.2 | 7.84 | 3.05 | 2.75 | 0.6 | 2 |
| ST4.8 | 1.6 | 9.5 | 9.14 | 3.55 | 3.25 | 0.7 | 2 |
| ST5.5 | 1.8 | 10.8 | 10.37 | 3.95 | 3.65 | 0.8 | 3 |
| ST6.3 | 1.8 | 12.5 | 12.07 | 4.55 | 4.25 | 0.9 | 3 |
