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| Nominal size and thread diameter d | Pitch of thread p | Thread Length b | Diameter of Countersunk head dk | Diameter of unthreaded shank ds’ | Width of nib g | i | Depth of head k | a | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coarse pitch | Bolt ≤ 125 | Bolt 125 – 200 | Bolt ≥ 200 | max | min | max | min | max | min | max | max | min | max | |
| M 6 | 1.0 | 18 | 24 | – | 12.55 | 11.45 | 6 | 5.52 | 2.5 | 2.10 | 2.5 | 4.0 | 90° | 95° |
| M 8 | 1.25 | 22 | 28 | 41 | 16.55 | 15.45 | 8 | 7.42 | 3.0 | 2.60 | 3.5 | 5.0 | 90° | 95° |
| M 10 | 1.5 | 26 | 32 | 45 | 19.65 | 18.35 | 10 | 9.42 | 3.2 | 2.72 | 4.2 | 5.5 | 90° | 95° |
| M 12 | 1.75 | 30 | 36 | 49 | 24.65 | 23.35 | 12 | 11.30 | 3.6 | 3.12 | 5.7 | 7.0 | 90° | 95° |
| M 16 | 2.0 | 38 | 44 | 57 | 32.80 | 31.20 | 16 | 15.30 | 4.2 | 3.72 | 7.5 | 9.0 | 90° | 95° |
| M 20 | 2.5 | 46 | 52 | 65 | 32.80 | 31.20 | 20 | 19.16 | 5.4 | 4.92 | 5.7 | 11.5 | 60° | 65° |
| M 24 | 3.0 | 54 | 60 | 73 | 38.80 | 37.20 | 24 | 23.16 | 6.6 | 6.02 | 6.7 | 13.0 | 60° | 65° |