Female thread connection for use with the ship’s male thread air outlet. Th Air Hose Couplings are made of cast bronze with Metric Fine Thread of M 42 x 2 for respective hose end connection thread size.
| Code | Nom. Hose End | Connection Thread |
| 351051 | 6 mm | M42 x 2 |
| 351052 | 8 mm | M42 x 2 |
| 351053 | 9 mm | M42 x 2 |
| 351054 | 12 mm | M42 x 2 |
| 351055 | 15 mm | M42 x 2 |
| 351056 | 19 mm | M42 x 2 |
| 351057 | 25 mm | M42 x 2 |
| 351058 | CAP | M42 x 2 |