ISO 1234
ISO 1234, Split pins / Cotter pins standard.
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Split Pin / Cotter Pin, ISO 1234 dimension as below:
| d | a max. | b | c mam. |
| 1.0 | 1.6 | 3 | 1.8 |
| 1.2 | 2.5 | 3 | 2 |
| 1.6 | 2.5 | 3.2 | 2.8 |
| 2.0 | 2.5 | 4 | 3.6 |
| 2.5 | 2.5 | 5 | 4.6 |
| 3.2 | 3.2 | 6.4 | 5.8 |
| 4.0 | 4 | 8 | 7.4 |
| 5.0 | 4 | 10 | 9.2 |
| 6.3 | 4 | 12.6 | 11.8 |
| 8.0 | 4 | 16 | 15 |
| 10 | 6.3 | 20 | 19 |
| 13 | 6.3 | 26 | 24.8 |