| Tube Size X Thread Inch | 10-32 UNF Thread | 1/8" NPT | 1/4" NPT | 3/8" NPT | 1/2" NPT |
|---|---|---|---|---|---|
| 5/32" OD | PB5/32-U10U | PB5/32-N1U | PB5/32-N2U | ||
| 3/16" OD | PB3/16-U10U | PB3/16-N1U | PB3/16-N2U | ||
| 1/4" OD | PB1/4-U10U | PB1/4-N1U | PB1/4-N2U | PB1/4-N3U | |
| 3/8" OD | PB3/8-N1U | PB3/8-N2U | PB3/8-N3U | PB3/8-N4U | |
| 1/2" OD | PB1/2-N2U | PB1/2-N3U | PB1/2-N4U | ||
| Tube Size X Thread Metric | M5 X .8 Thread | R1/8 | R1/4 | R3/8 | R1/2 |
| 4MM | PB4-M5 | PB4-01 | PB4-02 | ||
| 6MM | PB6-M5 | PB6-01 | PB6-02 | PB6-03 | |
| 8MM | PB8-01 | PB8-02 | PB8-03 | ||
| 10MM | PB10-01 | PB10-02 | PB10-03 | PB10-04 | |
| 12MM | PB12-02 | PB12-03 | PB12-04 | ||
| 16MM | PB16-03 | PB16-04 |