| Thread Size d | M 3 | M 4 | M 5 | M 6 | M 8 | M 10 | M 12 | M 16 | M 20 | |
|---|---|---|---|---|---|---|---|---|---|---|
| P | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
| c | Nom | 0.2 | 0.3 | 0.3 | 0.3 | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 |
| dk | Max | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 30 | 36 |
| Min | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 29.48 | 35.38 | |
| k | Nom | 1.7 | 2.3 | 2.8 | 3.3 | 4.4 | 5.5 | 6.5 | 7.5 | 8.5 |
| r | Min | 0.1 | 0.2 | 0.2 | 0.30 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |
| da | Max | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 17.7 | 22.4 |
| s | Nom | 2.1 | 2.60 | 3.10 | 4.0 | 5.0 | 6.0 | 8.0 | 10.0 | 12.0 |
| Max | 2.1 | 2.60 | 3.10 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | 12.212 | |
| Min | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | |
| t | Max | 1.2 | 1.8 | 2.3 | 2.5 | 3.5 | 4.4 | 4.6 | 5.3 | 5.9 |
| Min | 0.95 | 1.55 | 2.05 | 2.25 | 3.2 | 4.1 | 4.3 | 5.0 | 5.6 | |
| t1 | Max | 1.85 | 2.69 | 3.18 | 3.58 | 4.42 | 6.01 | 6.85 | 8.10 | 8.70 |
| e | Min | 2.3 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | 13.73 |
| Thread Size d | M 14 | M 18 | |
|---|---|---|---|
| P | 2 | 2.5 | |
| c | Nom | 0.5 | 0.5 |
| dk | Max | 27 | 33 |
| Min | 26.48 | 32.38 | |
| k | Nom | 7 | 1 |
| r | Min | 1 | 1 |
| da | Max | 15.7 | 20.2 |
| s | Nom | 10 | 12 |
| Max | 10.175 | 12.212 | |
| Min | 10.025 | 12.032 | |
| t | Max | 4.8 | 5.5 |
| Min | 4.5 | 5.2 | |
| t1 | Max | 7.5 | 8.4 |
| e | Min | 11.43 | 13.72 |
1) The head height 'k' is the distance from face to the intersection of conical portion of the head with the basic screw diameter.
All data for information purpose only. For more details on product standards or dimensions, please feel free to contact us at centuryboltcentre@gmail.com