Union Ball Joint (Female NPT Thread)
| Female NPTThread Size | Dimensions in mm | F-Hex1(Inch) | F-Hex2(Inch) | Pressure RatingPSIG (Bar) | Dawsons-TechPart No. | |
| P | E | L | ||||
| 1/8 | 6.8 | 46.0 | 1-1/8 | 1-1/16 | 8400 (572) | UBJ-2N |
| 1/4 | 9.1 | 59.4 | 1-3/8 | 1-3/16 | 6600 (450) | UBJ-4N |
| 3/8 | 13.2 | 63.5 | 1-1/2 | 1-5/16 | 5300 (360) | UBJ-6N |
| 1/2 | 15.7 | 68.3 | 1-3/4 | 1-5/8 | 6000 (408) | UBJ-8N |
| 3/4 | 22.4 | 79.2 | 2-1/8 | 1-7/8 | 4600 (313) | UBJ-12N |
| 1 | 26.2 | 90.4 | 2-1/2 | 2-3/8 | 6800 (462) | UBJ-16N |