- small threads
- no projections
- simple fitting without special tools
- can be re-used
- Cooling systems
- Fuel pumps
Couplings with threaded ferrules are suitable for pressures up to 16 bar with suitable hoses.
Male coupling: an external thread on one side and brass ferrules on the other, chromium plated for stainless steel.
Female coupling: a captive nut on one side and a threaded ferrule on the other of chromium-plated brass (brass for stainless steel fittings).