Same size on both ends — 3/8" — but one side is SAE and the other is BSP. You can't just screw them together. This Jaycar fitting is machined from solid brass merchant bar so the thread pitch and diameter match exactly where they need to. Non-RTM fittings mate directly with it. One part, no guesswork, no weeping joint after the first pressure cycle
| brand | Jaycar |
| material | Brass |
| thread_type_one | 3/8" SAE Male |
| thread_type_two | 3/8" BSP Male |
| fitting_style | Straight |
| compatibility | Non-RTM fittings |
| category | Automotive & Outdoor Electronics |