FASTENER STANDARD
ISO 7047
Raised countersunk head screws with cross recess
ISO 7047:2011 specifies the characteristics of countersunk raised head screws of product grade A, with threads from M1,6 to M10 inclusive and with type H or type Z cross recess.
2011 · currentISO 7047 dimensional reference
Raised countersunk head screws with cross recess
| Thread size | Pitch (mm) | aMax | threadLengthMin | dkTheoreticalMax | Head diameter dk (mm) | dkMin | f | Head height k (mm) | rMax | rf | pointC | driveNo | driveRefH | driveDepthMinH | driveDepthMaxH | driveRefZ | driveDepthMinZ | driveDepthMaxZ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.35 | 0.7 | 25 | 3.6 | 3 | 2.7 | 0.4 | 1 | 0.4 | 3 | 0.9 | 0 | 1.9 | 0.9 | 1.2 | 1.9 | 0.95 | 1.2 |
| M2 | 0.4 | 0.8 | 25 | 4.4 | 3.8 | 3.5 | 0.5 | 1.2 | 0.5 | 4 | 1 | 1 | 2 | 1.2 | 1.5 | 2.2 | 1.15 | 1.4 |
| M2.5 | 0.45 | 0.9 | 25 | 5.5 | 4.7 | 4.4 | 0.6 | 1.5 | 0.6 | 5 | 1.1 | 1 | 3 | 1.5 | 1.85 | 2.8 | 1.5 | 1.75 |
| M3 | 0.5 | 1 | 25 | 6.3 | 5.5 | 5.2 | 0.7 | 1.65 | 0.8 | 6 | 1.25 | 2 | 3.4 | 1.8 | 2.2 | 3.1 | 1.83 | 2.08 |
| M3.5 | 0.6 | 1.2 | 38 | 8.2 | 7.3 | 6.94 | 0.8 | 2.35 | 0.9 | 8.5 | 1.5 | 2 | 4.8 | 2.25 | 2.75 | 4.6 | 2.25 | 2.7 |
| M4 | 0.7 | 1.4 | 38 | 9.4 | 8.4 | 8.04 | 1 | 2.7 | 1 | 9.5 | 1.75 | 2 | 5.2 | 2.7 | 3.2 | 5 | 2.65 | 3.1 |
| M5 | 0.8 | 1.6 | 38 | 10.4 | 9.3 | 8.94 | 1.2 | 2.7 | 1.3 | 9.5 | 2 | 2 | 5.4 | 2.9 | 3.4 | 5.3 | 2.9 | 3.35 |
| M6 | 1 | 2 | 38 | 12.6 | 11.3 | 10.87 | 1.4 | 3.3 | 1.5 | 12 | 2.5 | 3 | 7.3 | 3.5 | 4 | 7.1 | 3.4 | 3.85 |
| M8 | 1.25 | 2.5 | 38 | 17.3 | 15.8 | 15.37 | 2 | 4.65 | 2 | 16.5 | 3.2 | 3 | 9.6 | 4.75 | 5.25 | 9.5 | 4.75 | 5.2 |
| M10 | 1.5 | 3 | 38 | 20 | 18.3 | 17.78 | 2.3 | 5 | 2.5 | 19.5 | 3.8 | 4 | 10.4 | 5.5 | 6 | 10.3 | 5.6 | 6.05 |