This 3/8 in Aluminum 37° Flare Union is used in aerospace hydraulic systems and motorsport applications
| Type | Aerospace Aluminum Hydraulic Fittings |
| Style | 37° Flare Union |
| Size | 9/16" - 18 |
| Material | Aluminum |
| Tube O.D. | 3/8" |
| Color | Blue |
| Series | AN815 |
| Hex Size | 13/16" |
| AN Specification | AN815-6D |
| SAE Specification | AS5174D0606 |
| MS Specification | MS24392D6 |
