These wings allow the nut to be hand tightened, made by copper. While they cannot be tightened by hand as firmly as a conventional hex nut can be tightened with a wrench, they are far easier to tighten and loosen. They are generally used in applications that require frequent adjustments to bolt tightness or in situations wherein ease of use and assembly is most important. They are available in a wide variety of styles and materials.
| Screw Thread d | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | |
| d1 | 20 | 23 | 28 | 28 | 32 | 36 | 40 | 45 | |
| L | 50 | 64 | 72 | 72 | 80 | 90 | 100 | 112 | |
| y | 4 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | |
| y1 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | |
| k | 25 | 32 | 36 | 36 | 40 | 45 | 50 | 56 | |
| d2 | 16 | 19 | 22 | 22 | 25 | 28 | 32 | 36 | |
| m | 12 | 14 | 16 | 16 | 18 | 20 | 22 | 24 | |
| per 1000 units≈kg | Steel | 38 | 66 | 104.4 | 99.3 | 139.95 | 199 | 279.45 | 390.3 |
| Cast iron | 35.81 | 62.23 | 98.42 | 93.61 | 131.94 | 187.59 | 263.44 | 367.93 | |