Estas tuercas tienen aproximadamente la mitad de la altura de las tuercas hexagonales estándar. Úselos en aplicaciones de poca holgura o atasque una contra otra tuerca para mantenerla en su lugar.
| Rosca d | M1.6 | (M1.8) | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | ||
| P | Tono | Rosca gruesa | 0.35 | 0.35 | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 |
| Hilo fino 1 | / | / | / | / | / | / | / | / | / | 1 | 1 | 1.5 | 1.5 | 1.5 | ||
| Hilo fino 2 | / | / | / | / | / | / | / | / | / | / | 1.25 | 1.25 | / | / | ||
| Hilo fino 3 | / | / | / | / | / | / | / | / | / | / | / | / | / | / | ||
| da | min | 1.6 | 1.8 | 2 | 2.5 | 3 | 3.5 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | |
| max | 1.84 | 2.06 | 2.3 | 2.9 | 3.45 | 4 | 4.6 | 5.75 | 6.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | ||
| dw | min | 2.4 | 2.7 | 3.1 | 4.1 | 4.6 | 5.1 | 5.9 | 6.9 | 8.9 | 11.6 | 15.6 | 17.4 | 20.5 | 22.5 | |
| e | min | 3.48 | 3.82 | 4.32 | 5.45 | 6.01 | 6.58 | 7.66 | 8.79 | 11.05 | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 | |
| m | max | 1 | 1.1 | 1.2 | 1.6 | 1.8 | 2 | 2.2 | 2.7 | 3.2 | 4 | 5 | 6 | 7 | 8 | |
| min | 0.75 | 0.85 | 0.95 | 1.35 | 1.55 | 1.75 | 1.95 | 2.45 | 2.9 | 3.7 | 4.7 | 5.7 | 6.42 | 7.42 | ||
| mw | min | 0.6 | 0.68 | 0.76 | 1.08 | 1.24 | 1.4 | 1.56 | 1.96 | 2.32 | 2.96 | 3.76 | 4.56 | 5.14 | 5.94 | |
| s | max | 3.2 | 3.5 | 4 | 5 | 5.5 | 6 | 7 | 8 | 10 | 13 | 17 | 19 | 22 | 24 | |
| min | 3.08 | 3.38 | 3.82 | 4.82 | 5.32 | 5.82 | 6.78 | 7.78 | 9.78 | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 | ||
| por 1000 unidades ≈ kg | 0.06 | 0.08 | 0.11 | 0.22 | 0.29 | 0.37 | 0.57 | 0.83 | 1.6 | 3.2 | 7.2 | 10.4 | 15.9 | 20.5 | ||
| Rosca d | (M18) | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) | - | ||
| P | Tono | Rosca gruesa | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 | - |
| Hilo fino 1 | 1.5 | 2 | 1.5 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | - | ||
| Hilo fino 2 | 2 | 1.5 | 2 | 1.5 | / | / | / | 2 | 2 | 2 | 2 | 2 | 2 | - | ||
| Hilo fino 3 | / | / | / | / | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | - | ||
| da | min | 18 | 20 | 22 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 | 52 | - | |
| max | 19.5 | 21.6 | 23.8 | 25.9 | 29.2 | 32.4 | 35.6 | 38.9 | 42.1 | 45.4 | 48.6 | 51.8 | 56.2 | - | ||
| dw | min | 24.9 | 27.7 | 29.5 | 33.2 | 38 | 42.7 | 46.6 | 51.1 | 55.9 | 60 | 64.7 | 69.4 | 74.2 | - | |
| e | min | 29.56 | 32.95 | 35.03 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | - | |
| m | max | 9 | 10 | 11 | 12 | 13.5 | 15 | 16.5 | 18 | 19.5 | 21 | 22.5 | 24 | 26 | - | |
| min | 8.42 | 9.1 | 9.9 | 10.9 | 12.4 | 13.9 | 15.4 | 16.9 | 18.2 | 19.7 | 21.2 | 22.7 | 24.7 | - | ||
| mw | min | 6.74 | 7.28 | 7.92 | 8.72 | 9.9 | 11.1 | 12.3 | 13.5 | 14.6 | 15.8 | 17 | 18.2 | 19.8 | - | |
| s | max | 27 | 30 | 32 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | - | |
| min | 26.16 | 29.16 | 31 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | - | ||
| por 1000 unidades ≈ kg | 29.6 | 40.2 | 48.3 | 69.5 | 101 | 139 | 183 | 244 | 316 | 403 | 500 | 617 | 755 | - | ||