DIN 7983 F Countersunk (Flat) Head Tapping Screws with Cross Recess, Form F
Dimensions for DIN 7983 F Countersunk (Flat) Head Tapping Screws with Cross Recess, Form F
| Thread size | p | a | dk | f | k | r | rf | cross recess | Type H | Type Z | Y max | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| m | Penetration depth | m | Penetration depth | ||||||||||||||
| max | nominal=max | min | approx | approx | max | approx | No. | approx | min | max | approx | min | max | Type C | Type F | ||
| ST 2.2 | 0.8 | 0.8 | 4.3 | 4 | 0.7 | 1.3 | 0.8 | 3.8 | 1 | 2.8 | 1.17 | 1.57 | 2.4 | 1.1 | 1.35 | 2 | 1.6 |
| ST 2.9 | 1.1 | 1.1 | 5.5 | 5.2 | 0.9 | 1.7 | 1.1 | 4.6 | 1 | 3.4 | 1.81 | 2.21 | 3.1 | 1.83 | 2.08 | 2.6 | 2.1 |
| ST 3.5 | 1.3 | 1.3 | 6.8 | 6.44 | 1.2 | 2.1 | 1.4 | 5.4 | 2 | 4.6 | 1.89 | 2.39 | 4.3 | 1.88 | 2.34 | 3.2 | 2.5 |
| ST 3.9 | 1.3 | 1.3 | 7.5 | 7.14 | 1.3 | 2.3 | 1.5 | 6 | 2 | 4.7 | 2.04 | 2.54 | 4.4 | 2 | 2.46 | 3.5 | 2.7 |
| ST 4.2 | 1.4 | 1.4 | 8.1 | 7.74 | 1.4 | 2.5 | 1.6 | 6.6 | 2 | 4.9 | 2.24 | 2.74 | 4.6 | 2.26 | 2.72 | 3.7 | 2.8 |
| ST 4.8 | 1.6 | 1.6 | 9.5 | 9.14 | 1.5 | 3 | 1.9 | 8.2 | 2 | 5.4 | 2.7 | 3.2 | 5.1 | 2.69 | 3.15 | 4.3 | 3.2 |
| ST 5.5 | 1.8 | 1.8 | 10.8 | 10.37 | 1.7 | 3.4 | 2.1 | 9.4 | 3 | 7 | 3.02 | 3.53 | 6.6 | 2.92 | 3.38 | 5 | 3.6 |
| ST 6.3 | 1.8 | 1.8 | 12.4 | 11.97 | 2 | 3.8 | 2.4 | 11.1 | 3 | 7.4 | 3.46 | 3.96 | 7.1 | 3.4 | 3.86 | 6 | 3.6 |