Copper is soft, easy to shape, corrosion resistant and an excellent conductor of heat and electricity. It is used in building construction, transportation, electronics and power generation.
| Size | M1 | M1.2 | M1.4 | M1.6 | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | ||
| d | Gread A | 1.1 | 1.3 | 1.5 | 1.7 | 2.2 | 2.7 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | |
| Gread C | 1.2 | 1.4 | 1.6 | 1.8 | 2.4 | 2.9 | 3.4 | 3.9 | 4.5 | 5.5 | 6.6 | 9 | 11 | ||
| dc | 2.5 | 3 | 3 | 3.5 | 4.5 | 5 | 6 | 7 | 8 | 9 | 11 | 15 | 18 | ||
| h | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1.6 | 1.6 | 1.6 | ||
| Size | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M36 | M42 | M48 | |||
| d | Gread A | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 28 | 31 | 37 | - | - | ||
| Gread C | 13.5 | 15.5 | 17.5 | 20 | 22 | 24 | 26 | 30 | 33 | 39 | 45 | 52 | |||
| dc | 20 | 24 | 28 | 30 | 34 | 37 | 39 | 44 | 50 | 60 | 72 | 84 | |||
| h | 2 | 2.5 | 2.5 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 4 | 6 | |||