| Diameter | mm | Inch |
| M1 | 1 | .0393 |
| M1.1 | 1.1 | .0433 |
| M1.2 | 1.2 | .0472 |
| M1.4 | 1.4 | .0551 |
| M1.6 | 1.6 | .0629 |
| M.17 | 1.7 | .0669 |
| M1.8 | 1.8 | .0708 |
| M2 | 2 | .0787 |
| M2.2 | 2.2 | .0866 |
| M2.3 | 2.3 | .0905 |
| M2.5 | 2.5 | .0984 |
| M2.6 | 2.6 | .1023 |
| M3 | 3 | .1181 |
| M3.5 | 3.5 | .1378 |
| M4 | 4 | .1574 |
| M4.5 | 4.5 | .1771 |
| M5 | 5 | .1968 |
| M6 | 6 | .2362 |
| M7 | 7 | .2755 |
| M8 | 8 | .3149 |
| M10 | 10 | .3937 |
| M12 | 12 | .4724 |
| M14 | 14 | .5511 |
| M16 | 16 | .6299 |
| M18 | 18 | .7086 |
| M20 | 20 | .7874 |
| M22 | 22 | .8661 |
| M24 | 24 | .9448 |
| M27 | 27 | 1.0629 |
| M30 | 30 | 1.181 |
| M33 | 33 | 1.299 |
| M36 | 36 | 1.417 |
| M39 | 39 | 1.535 |
| M42 | 42 | 1.654 |
| M45 | 45 | 1.772 |
| M48 | 48 | 1.890 |
| M52 | 52 | 2.047 |
| M56 | 56 | 2.205 |
| M60 | 60 | 2.362 |
| M64 | 64 | 2.520 |
| M68 | 68 | 2.677 |
| M72 | 72 | 2.835 |
| M76 | 76 | 2.992 |
| M80 | 80 | 3.150 |
| M85 | 85 | 3.346 |
| M90 | 90 | 3.543 |
| M95 | 95 | 3.740 |
| M100 | 100 | 3.937 |
COMPARISON OF DIN AND JIS HEAD DIMENSIONS
 |
|
DIN |
JIS |
|||
| Head Dia. | Driver Size | Head Dia | Driver Size | |
| M2 |
4mm |
1 | 3.5mm | 1 |
| M2.5 | 5mm | 1 | 4.5mm | 1 |
| M3 | 6mm | 1 | 5.5mm | 2 |
| M3.5 | 7mm | 2 | 6mm | 2 |
| M4 | 8mm | 2 | 7mm | 2 |
| M5 | 10mm | 2 | 9mm | 2 |
| M6 | 12mm | 3 | 10.5mm | 3 |
| M8 | 16mm | 4 | 14mm | 3 |
|
|
DIN |
JIS |
|||
| Head Dia. | Driver Size | Head Dia | Driver Size | |
| M2 |
3.8mm |
1 | 4mm | 1 |
| M2.5 | 4.7mm | 1 | 5mm | 1 |
| M3 | 5.6mm | 1 | 6mm | 2 |
| M3.5 | 6.5mm | 2 | 7mm | 2 |
| M4 | 7.5mm | 2 | 8mm | 2 |
| M5 | 9.2mm | 2 | 10mm | 2 |
| M6 | 11mm | 3 | 12mm | 3 |
| M8 | 14.5mm | 4 | 16mm | 3 |
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