| Female NPTThread Size | Reduced Female NPTThread Size | Dimensions in mm | F-Hex(Inch) | Pressure RatingPSIG (Bar) | Dawsons-TechPart No. |
| P1 | P2 | E | L |
| 1/4 | 1/8 | 8.6 | 31.0 | 3/4 | 6600 (450) | HRC-4N-2N |
| 3/8 | 1/8 | 8.6 | 31.0 | 7/8 | 5300 (360) | HRC-6N-2N |
| 3/8 | 1/4 | 11.4 | 35.1 | 7/8 | 5300 (360) | HRC-6N-4N |
| 1/2 | 1/8 | 8.6 | 39.6 | 1-1/16 | 5200 (354) | HRC-8N-2N |
| 1/2 | 1/4 | 11.4 | 44.4 | 1-1/16 | 5200 (354) | HRC-8N-4N |
| 1/2 | 3/8 | 15.0 | 45.0 | 1-1/16 | 5200 (354) | HRC-8N-6N |
| 3/4 | 1/4 | 11.4 | 46.0 | 1-1/4 | 4300 (292) | HRC-12N-4N |
| 3/4 | 3/8 | 15.0 | 46.0 | 1-1/4 | 4300 (292) | HRC-12N-6N |
| 3/4 | 1/2 | 18.5 | 52.3 | 1-1/4 | 4300 (292) | HRC-12N-8N |
| 1 | 1/2 | 18.5 | 55.6 | 1-5/8 | 4500 (306) | HRC-16N-8N |
| 1 | 3/4 | 23.9 | 57.2 | 1-5/8 | 4500 (306) | HRC-16N-12N |
Dimensions are for reference only and are subject to change.
