Roller cone bits ( Page 3)
| Bit diameter | Bit designation | Connection thread | |
| mm | inch | IADC code | API 7-2 |
| 250.8 | 9 ⅞ | 632Y | 4 ½" FH |
| 250.8 | 9 ⅞ | 632Y | 6 ⅝" REG |
| 250.8 | 9 ⅞ | 642Y | 4 ½" FH |
| 250.8 | 9 ⅞ | 642Y | 6 ⅝" REG |
| 250.8 | 9 ⅞ | 712Y | 4 ½" FH |
| 250.8 | 9 ⅞ | 712Y | 6 ⅝" REG |
| 250.8 | 9 ⅞ | 732Y | 4 ½" FH |
| 250.8 | 9 ⅞ | 732Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 522Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 612Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 622Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 632Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 642Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 722Y | 6 ⅝" REG |
| 269.9 | 10 ⅝ | 732Y | 6 ⅝" REG |
| 311.1 | 12 ¼ | 612Y | 6 ⅝" REG |
| 311.1 | 12 ¼ | 632Y | 6 ⅝" REG |
| 311.1 | 12 ¼ | 642Y | 6 ⅝" REG |
| 311.1 | 12 ¼ | 712Y | 6 ⅝" REG |
| 311.1 | 12 ¼ | 722Y | 6 ⅝" REG |