| Number | Type | Part No. | Specification |
| 1 | BUMAX ALL METAL SELF LOCKING COLLARED NUTS | BUMAXLOCK1288 | M12 ALL METAL SELF LOCKING COLLARED NUT BUMAX 88 |
| 2 | BUMAX ALL METAL SELF LOCKING COLLARED NUTS | BUMAXLOCK1688 | M16 ALL METAL SELF LOCKING COLLARED NUT BUMAX 88 |
| 3 | BUMAX ALL METAL SELF LOCKING COLLARED NUTS | BUMAXLOCK2088 | M20 ALL METAL SELF LOCKING COLLARED NUT BUMAX 88 |

| Parameter | |||
| Diameter (d) | Pitch | s | m |
| M12 | 1.75 | 18.00-17.73 | 12.00-11.57 |
| M16 | 2 | 24.00-23.67 | 16.00-15.30 |
| M20 | 2.5 | 30.00-29.16 | 20.00-18.10 |
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