All measurements in millimeters (mm)
Legend:
s – size of the hexagon
t – length of the thread
d – the nominal diameter of the thread
h – height of the nut
m – hight of the nut part
dk – head diameter
da – Turning diameter shrinkage
dw – contact surface diameter
mw – minimum wrenching height
| thread | Series 1 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 |
| Series 2 | - | - | - | M8x1 | M10x1 | M12x1,5 | (M14x1,5) | (M16x1,5) | (M18x1,5) | M20x2 | (M22x1,5) | M24x2 | |
| Series 3 | - | - | - | - | M10x1,25 | M12x1,25 | - | - | (M18x2) | M20x1,5 | (M22x2) | - | |
| P | Series 1 | 0,7 | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | 2 | 2,5 | 2,5 | 2,5 | 3 |
| da | min. | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| max. | 4,6 | 5,75 | 6,75 | 8,75 | 10,8 | 13 | 15,1 | 17,3 | 19,5 | 21,6 | 23,7 | 25,9 | |
| dk | max. | 6,5 | 7,5 | 9,5 | 12,5 | 15 | 17 | 20 | 23 | 26 | 28 | 33 | 34 |
| dw | min. | 5,9 | 6,9 | 8,9 | 11,6 | 14,6 | 16,6 | 19,6 | 22,5 | 24,9 | 27,7 | 31,4 | 33,3 |
| e min. | Product grade A | 7,66 | 8,79 | 11,05 | 14,38 | 17,77 | 20,03 | 23,35 | 26,75 | 30,14 | 33,53 | 37,72 | 39,98 |
| Product grade B | 7,5 | 8,63 | 10,89 | 14,2 | 17,59 | 19,85 | 22,78 | 26,17 | 29,56 | 32,95 | 37,29 | 39,55 | |
| x max. | Series 1 | 1,4 | 1,6 | 2 | 2,5 | 3 | - | - | - | - | - | - | - |
| Series 2 | - | - | - | 2 | 2 | - | - | - | - | - | - | - | |
| Series 3 | - | - | - | - | 2,5 | - | - | - | - | - | - | - | |
| g2 max. | Series 1 | - | - | - | - | - | 6,4 | 7,3 | 7,3 | 9,3 | 9,3 | 9,3 | 10,7 |
| Series 2 | - | - | - | - | - | 5,6 | 5,6 | 5,6 | 5,6 | 7,3 | 5,6 | 7,3 | |
| Series 3 | - | - | - | - | - | 4,9 | - | - | 7,3 | 5,6 | 7,3 | - | |
| h | max. nominal size | 8 | 10 | 12 | 15 | 18 | 22 | 25 | 28 | 32 | 34 | 39 | 42 |
| min. P. grade A | 7,64 | 9,64 | 11,57 | 14,57 | 17,57 | 21,48 | 24,48 | 27,48 | 32,38 | 33,38 | 38,38 | 41,38 | |
| min. P. grade B | 7,42 | 9,42 | 11,3 | 14,3 | 17,3 | 21,16 | 24,16 | 27,16 | 31 | 33 | 38 | 41 | |
| m | max. | 3,2 | 4 | 5 | 6,5 | 88 | 10 | 11 | 13 | 15 | 16 | 18 | 19 |
| min. | 2,9 | 3,7 | 4,7 | 6,14 | 7,64 | 9,64 | 10,3 | 12,3 | 14,3 | 14,9 | 16,9 | 17,7 | |
| Mw | min. | 2,32 | 2,96 | 3,76 | 4,91 | 6,11 | 7,71 | 8,24 | 9,84 | 11,44 | 11,92 | 13,52 | 14,16 |
| r | approx. | 3,25 | 3,75 | 4,75 | 6,25 | 7,5 | 8,5 | 10 | 11,5 | 13 | 14 | 16,5 | 17 |
| s | Max. = nominal size | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 |
| min. P. grade A | 6,78 | 7,78 | 9,78 | 12,73 | 15,73 | 17,73 | 20,67 | 23,67 | 26,67 | 29,67 | 33,38 | 35,38 | |
| min. P. grade B | 6,64 | 7,64 | 9,64 | 12,57 | 15,57 | 17,57 | 20,16 | 23,16 | 26,16 | 29,16 | 33 | 35 | |
| t | min. | 5,26 | 7,21 | 7,71 | 10,65 | 12,65 | 15,65 | 17,65 | 20,58 | 24,58 | 25,58 | 28,58 | 30,5 |
| max. | 5,74 | 7,79 | 8,29 | 11,35 | 13,35 | 16,35 | 18,35 | 21,42 | 25,42 | 26,42 | 29,42 | 31,5 | |
| w | min. | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | 5 | 5 | 5 | 6 |
Disclaimer
Dimensional data and technical information was obtained from publicly available sources and not acquired through standards agencies. It has been completed and compiled for reference purposes only; where discrepancies are found they are subject to change without notice. KAF makes no warranties or representations regarding the accuracy and validity of the compiled information and data. Contact the relevant standards authorities for accurate and detailed information.