| IADC classification : PDC bits | |||||||
| A Bit body |
B Formation type |
C Cutting structure |
D Bit profile |
||||
| "M" | Matrix | 1 | Very soft | 2 | PDC, 19mm | 1 | Short fishtail |
| "S" | Steel | 3 | PDC, 13mm | 2 | Short profile | ||
| "D" | Diamond | 4 | PDC, 8mm | 3 | Medium profile | ||
| Example | 2 | Soft | 2 | PDC, 19mm | 4 | Long profile | |
| M | Matrix | 3 | PDC, 13mm | ||||
| 4 | Medium | 4 | PDC, 8mm | ||||
| 3 | PDC 13mm | 3 | Soft to medium | 2 | PDC, 19mm | ||
| 4 | Long profile | 3 | PDC, 13mm | ||||
| 4 | PDC, 8mm | ||||||
| 4 | Medium | 2 | PDC, 19mm | ||||
| 3 | PDC, 13mm | ||||||
| 4 | PDC, 8mm | ||||||
| 5 | No code | ||||||
| 6 | Medium hard | 2 | Natural diamond | ||||
| 3 | TSP | ||||||
| 4 | Combination | ||||||
| 7 | Hard | 2 | Natural diamond | ||||
| 3 | TSP | ||||||
| 4 | Combination | ||||||
| 8 | Extremely hard | 2 | Natural diamond | ||||
| 3 | Impregnated diamond | ||||||