DIN 980 lock nuts, all metal lock nut is also known as all metal self-locking nut. There are two main locking forms:
a. This kind of nut is called 980-v type, and the common forms are as follows: end face three-point type, elliptical type, side extrusion type.
b. The nut is embedded with a metal locking plate, which can prevent loosing by the locking ring. This kind of nut is called 980-m

All measurements in millimeters (mm)
d1 | s | e min | d2 | h max |
M4 | 7 | 7.66 | 4.2 | |
M5 | 8 | 8.79 | 5.1 | |
M6 | 10 | 11.05 | 6 | |
M8 | 13 | 14.38 | 8 | |
M10 | 17 | 18.9 | 10 | |
M12 | 19 | 21.1 | 12 | |
M14 | 22 | 24.49 | 14 | |
M16 | 24 | 26.75 | 16 | |
M18 | 27 | 29.56 | 23 | 18 |
M20 | 30 | 32.95 | 27.5 | 20 |
M22 | 32 | 35.03 | 29.5 | 22 |
M24 | 36 | 39.55 | 31 | 24 |
M27 | 41 | 45.02 | ||
M30 | 46 | 50.85 | ||
M33 | 50 | 55.37 | ||
M36 | 55 | 60.79 |

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