AN819-4

AN819-4 Aircraft Tube Sleeve

The AN819-4 is a sleeve for aeronautical tubing, manufactured to the AN (Air Force-Navy) standard. Its function is to reinforce the end of metal tubes used in aeronautical systems, providing a secure connection when used together with AN nuts and fittings.

It is widely used in hydraulic, fuel, oil, and pneumatic line systems in fixed-wing and rotary-wing aircraft.