DIN EN ISO 14581 Standard Dimensions for Hexalobular socket countersunk flat head screws
Technical History and International Equivalents of DIN EN ISO 14581
Hexalobular socket countersunk flat head screws
This standard specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability.
Dimensional Drawing and Technical Diagrams
Key Dimensions and Technical Parameters
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Dimensions in mm - source Din 14581 2011 Publication date 02/2014 Supersedes 03/2012 |
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| d thread size | P | b | dk max=nom | k max | t min | t max | A | ||
| M 2 | 0.4 | 25 | 3.8 | 1.2 | 0.51 | 0.64 | 1.75 | 6 | |
| M 2.5 | 0.45 | 25 | 4.7 | 1.5 | 0.66 | 0.79 | 2.4 | 8 | |
| M 3 | 0.5 | 25 | 5.5 | 1.65 | 0.7 | 0.83 | 2.8 | 10 | |
| M 3.5 | 0.6 | 38 | 7.3 | 2.35 | 1.16 | 1.32 | 3.4 | 15 | |
| M 4 | 0.7 | 38 | 8.4 | 2.7 | 1.14 | 1.53 | 3.95 | 20 | |
| M 5 | 0.8 | 38 | 9.3 | 2.7 | 1.12 | 1.51 | 4 | 25 | |
| M 6 | 1 | 38 | 11.3 | 3.3 | 1.39 | 1.78 | 4.5 | 30 | |
| M 8 | 1.25 | 38 | 15.8 | 4.65 | 2.15 | 2.54 | 5.6 | 45 | |
| M 10 | 1.5 | 38 | 18.3 | 5 | 2.41 | 2.8 | 6.8 | 50 | |