| Part No. | 1 Male NPTF | 2 Male NPTF | N Length | N1 Length | Y Flats | Operating Pressure |
| 5501-02-02-4 5501-04-04-4 | 1/8 - 27 1/4 - 18 | 1/8 - 27 1/4 - 18 | 0.64 0.86 | 0.64 0.86 | 7/16 9/16 | 6,000 6,000 |
| 5501-06-06-4 5501-08-08-4 | 3/8 - 18 1/2 - 14 | 3/8 - 18 1/2 - 14 | 0.95 1.18 | 0.95 1.18 | 3/4 7/8 | 6,000 6,000 |
| 5501-12-12-4 5501-16-16-4 | 3/4 - 14 1 - 11 1/2 | 3/4 - 14 1 - 11 1/2 | 1.38 1.48 | 1.38 1.48 | 1 1/16 1 5/16 | 4,000 3,000 |