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Plat head screws with type H Cross recess - Product grade A
This part of ISO 7046 specifies the characteristics of countersunk flat head screws with threads from M1,6 to M10 inclusive, of product grade A and property class 4.8, and with type H or type Z Cross recess.
If, in special cases, specifications other than those Iisted in this part of ISO 7046 are required, they should be selected from existing International Standards, for example ISO 261, ISO 888, ISO 898-1 and ISO 965-2.
The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 7046. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 7046 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0
maintain registers of currently valid International Standards.
If you are looking for plat head screws, please contact us for further information.
| Minimum breaking torques | |||||
| Thread | Pitch (mm) | Minimum breaking torque (N.m) | |||
| Property class | |||||
| 8.8 | 9.8 | 10.9 | 12.9 | ||
| M2 | 0.40 | 0.37 | 0.4 | 0.45 | 0.5 |
| M2.5 | 0.45 | 0.82 | 0.9 | 1 | 1.1 |
| M3 | 0.50 | 1.5 | 1.7 | 1.9 | 2.1 |
| M3.5 | 0.60 | 2.4 | 2.7 | 3 | 3.3 |
| M4 | 0.70 | 3.6 | 3.9 | 4.4 | 4.9 |
| M5 | 0.80 | 7.6 | 8.3 | 9.3 | 10 |
| M6 | 1.00 | 13 | 14 | 16 | 17 |
| M7 | 1.00 | 23 | 25 | 28 | 31 |
| M8 | 1.25 | 33 | 36 | 40 | 44 |
| M8x1.0 | 1.00 | 38 | 42 | 46 | 52 |
| M10 | 1.50 | 66 | 72 | 81 | 90 |
| M10x1.0 | 1.00 | 84 | 92 | 102 | 114 |
| M10x1.25 | 1.25 | 75 | 82 | 91 | 102 |