NB Socket Weld Hexagon Union
| NB Size | Part No. | A | B Dia | A/F |
| 1/4" NB | 4 HU SW | 1.500" | 1.250" | 1.250" |
| 3/8" NB | 6 HU SW | 1.500" | 1.500" | 1.420" |
| 1/2" NB | 8 HU SW | 1.500" | 1.500" | 1.610" |
| 3/4" NB | 12 HU SW | 1.810" | 1.750" | 2.000" |
| 1" NB | 16 HU SW | 2.000" | 2.000" | 2.360" |
| 1-1/2" NB | 24 HU SW | 2.200" | 2.375" | 3.000" |
| 2" NB | 32 HU SW | 2.680" | 2.750" | 3.750" |
| 2-1/2" NB | 40 HU SW | 3.500" | 3.000" | 4.920" |
| 3" NB | 48 HU SW | 4.000" | 3.750" | 5.500" |