| Bolt Diameter (mm) |
Head/Wrench Size (mm) |
|||
|---|---|---|---|---|
| ANSI/ISO | DIN | JIS | DIN/ISO Heavy Hex |
|
| 4 | 7 | 7 | 7 | - |
| 5 | 8 | 8 | 8 | - |
| 6 | 10 | 10 | 10 | - |
| 7 | - | 11 | - | - |
| 8 | 13 | 13 | 12 | - |
| 10 | 16 | 17 | 14 | - |
| 12 | 18 | 19 | 17 | 22/21* |
| 14 | 21 | 22 | 19 | - |
| 16 | 24 | 24 | 22 | 27 |
| 18 | - | 27 | - | - |
| 20 | 30 | 30 | - | 34/32* |
| ANSI – American National Standards Institute ISO – International Organization for Standardisation DIN – Deutsches Institut fur Normung JIS – Japanese Industrial Standard * Indicates ISO standard. |
||||
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