Metric coarse thread
This thread is a globally standardized thread, it replaces older metric thread and most threads with inch dimensions.
Normally it consists of the letter M and a number that indicates the nominal diameter (M5 = diameter of 5mm).
The flank angle is 60°.
ISO METRIC COARSE THREAD DIN 13-1
| Nominal Diameter (mm) | Pitch (mm) | Tapping Drill Size (mm) |
| M1 | 0.25 | 0.78 |
| M1.1 | 0.25 | 0.83 |
| M1.2 | 0.25 | 0.93 |
| M1.4 | 0.30 | 1.08 |
| M1.6 | 0.35 | 1.22 |
| M1.8 | 0.35 | 1.42 |
| M2 | 0.40 | 1.57 |
| M2.2 | 0.45 | 1.71 |
| M2.5 | 0.45 | 2.01 |
| M3 | 0.50 | 2.46 |
| M3.5 | 0.60 | 2.85 |
| M4 | 0.70 | 3.24 |
| M4.5 | 0.75 | 3.69 |
| M5 | 0.80 | 4.13 |
| M6 | 1.00 | 4.92 |
| M7 | 1.00 | 5.92 |
| M8 | 1.25 | 6.65 |
| M9 | 1.25 | 7.65 |
| M10 | 1.50 | 8.38 |
| M11 | 1.50 | 9.38 |
| M12 | 1.75 | 10.11 |
| M14 | 2.00 | 11.84 |
| M16 | 2.00 | 13.84 |
| M18 | 2.50 | 15.29 |
| M20 | 2.50 | 17.29 |
| M22 | 2.50 | 19.29 |
| M24 | 3.00 | 20.75 |
| M27 | 3.00 | 23.75 |
| M30 | 3.50 | 26.21 |
| M33 | 3.50 | 29.21 |
| M36 | 4.00 | 31.67 |
| M39 | 4.00 | 34.67 |
| M42 | 4.50 | 37.13 |
| M45 | 4.50 | 40.13 |
| M48 | 5.00 | 42.59 |
| M52 | 5.00 | 46.59 |
| M56 | 5.50 | 50.05 |
| M60 | 5.50 | 54.05 |
| M64 | 6.00 | 57.51 |
| M68 | 6.00 | 61.51 |
METRIC COARSE THREAD DIN 13-1
Tags: