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ISO 14583-2011(E) Torx screw
Hexalobular socket pan head screws
Hexalobular internal driving feature ISO 10664-2014
Mechanical property ISO 898-1:2013(E)
Class 4.8 . 8.8
Marking NE 4.8 / 8.8
Raw material : 1010 . 10B21
Thread,d | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 |
| pb | 0.40 | 0.45 | 0.50 | 0.60 | 0.70 | 0.80 | 1.00 | 1.25 | 1.50 |
| a max. | 0.8 | 0.9 | 1 | 1.2 | 1.4 | 1.6 | 2 | 2.5 | 3 |
| b min. | 25 | 25 | 25 | 38 | 38 | 38 | 38 | 38 | 38 |
| da max. | 2.6 | 3.1 | 3.6 | 4.1 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 |
| dk max. | 4 | 5 | 5.6 | 7 | 8 | 9.5 | 12 | 16 | 20 |
| dk min. | 3.7 | 4.7 | 5.3 | 6.64 | 7.64 | 9.14 | 11.57 | 15.57 | 19.48 |
| k max. | 1.6 | 2.1 | 2.1 | 2.6 | 3.1 | 3.7 | 4.6 | 6 | 7.5 |
| k min. | 1.46 | 1.96 | 2.26 | 2.46 | 2.92 | 3.52 | 4.3 | 5.7 | 7.14 |
| r min. | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 |
| rf ≈ | 3.2 | 4 | 5 | 6 | 6.5 | 8 | 10 | 13 | 16 |
| x max. | 1.00 | 1.10 | 1.25 | 1.50 | 1.75 | 2.00 | 2.50 | 3.20 | 3.80 |
| Socket no. | 6 | 8 | 10 | 15 | 20 | 25 | 30 | 45 | 50 |
| A ref. | 1.75 | 2.4 | 2.8 | 3.35 | 3.95 | 4.5 | 5.6 | 7.95 | 8.95 |
| t max. | 0.77 | 1.04 | 1.27 | 1.33 | 1.66 | 1.91 | 2.42 | 3.18 | 4.02 |
| t min. | 0.63 | 0.91 | 1.01 | 1.07 | 1.27 | 1.52 | 2.02 | 2.79 | 3.62 |
