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Hexalobular socket pan head screw ISO14583 M4X20 Grade 8.8 Zinc plate
This International Standard specifies the characteristics of hexalobular socket pan head screws in product grades A and with thread sizes from M2 up to and including M10.
A hexalobular socket pan head screw with thread M4, nominal length l = 20 mm and property class 8.8 is
designated as follows:
Hexalobular socked pan head screw ISO 14583 - M4x 20 - 8.8
| 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 |