Specification
| Thread type | OD | ID | Circular bead dia. | Bending strength | Length |
| in (mm) | in (mm) | in (mm) | Ratio | ft (mm) | |
| NC44-60 | 6 (152.4) | 2-13/16(71.4) | 5.689 (144.5) | 2.84∶1 | 30.5/31.5 (9150/9450) |
| NC44-60 | 6 (152.4) | 2-1/4 (57.2) | 5.689 (144.5) | 2.49∶1 | |
| NC44-62 | 6-1/4 (158.8) | 5.874 (149.2) | 2.91∶1 | ||
| NC46-62 (4IF) | 6-1/4 (158.8) | 2-13/16 (71.4) | 5.906 (150.0) | 2.63∶1 | |
| NC46-65 (4IF) | 6-1/2 (165.1) | 2-1/4 (57.2) | 6.094 (154.8) | 2.76∶1 | |
| NC46-65 (4IF) | 6-1/2 (165.1) | 2-13/16 (71.4) | 6.094 (154.8) | 3.05∶1 | |
| NC50-70 (4-1/2IF) | 7 (177.8) | 6.484 (164.7) | 2.73∶1 | ||
| NC56-77 | 7-3/4 (196.8) | 7.295 (185.3) | 2.70∶1 | ||
| NC56-80 | 8 (203.8） | 7.484 (190.1) | 3.02∶1 | ||
| NC61-90 | 9 (228.6) | 3(76.2) | 8.374 (212.7) | 3.17∶1 | |
| 9.157 (232.6) | 2.57∶1 | ||||
| NC70-97 | 9-3/4 (247.66) | ||||
| NC70-100 | 10 (254.0) | 2-13/16 (71.4) | 9.343 (237.3) | 2.81∶1 |