Aviation and Military Fittings
In the aviation industry, there are a huge variety of different types of fittings used when repairing or otherwise working on an aircraft. These fittings are crucial to the safe operation of the aircraft, and it’s important to understand what they’re used for. Here at Military Fasteners, we pride ourselves not just on our wide variety of parts and materials, but also our ability to share vital information with the consumer. Here are some of the most common types of fittings you might find on an aircraft.
Our fittings catalog - https://military-fasteners.com/fittings
Our fittings catalog - https://military-fasteners.com/fittings
Aviation and Military Fittings
Bushings and Reducers
Bushings and reducers are often used when there is a need to reduce the thread from one pipe to another pipe, for joining two pipes together. For example, if you need to join together a 1/4 pipe with a 1/8 pipe, you might need a 1D size AN912 bushing to do the job. Other types of bushings are used to reduce vibration and allow for rotation of moving parts without the need for lubricating agents.
Caps
Another type of fitting commonly used in aviation is the cap, such as the AN929 cap flared tube fitting. This type of fitting is used to close off a pipe end that does not attach to another pipe or fitting, to prevent the escape of gases and fluids from that end of the pipe.
Couplings/Sleeves
Couplings and sleeves are commonly used to join pipes or hoses together, and are specially designed to meet FAA specifications for use in aviation mechanics.
Crosses, Tees, and Unions
Often, pipes or hoses need to join together. Sometimes this junction is in pairs, sometimes in triples, and sometimes in quadruple. These fittings, such as the AN827 flared tube cross, are commonly available from us, and feature the threads on the outside. Other applications require internal pipe threads, and would necessitate a part such as the AN918 cross. We also provide tee fittings, which are used to split a single pipe or hose into two directions, and union fittings for joining together pipes or hoses.
Elbows
Then you come to the elbow, which is used to join pipes or hoses together at an angle, for routing the pipes and hoses through the engine compartment in different directions. We carry a wide variety of different elbow fittings, including 45º and 90º elbows, depending on the customer need.
Hose Fittings
Hose fittings are used at the ends of hoses to attach them to pipes and other aircraft parts. These fittings often require a specific pressure rating, and our hose fittings are designed according to the FAA or Mil-Spec specifications required for each individual aircraft. These fittings can include hose bulkhead fittings, nipple pipe thread fittings, and 45º or 90º hose elbow pipe thread fittings, among others.
Nuts
No engine, aircraft or otherwise, could be complete without the nuts to secure parts together. Working in tandem with bolts and screws, aircraft engines and other aviation system depend on reliable nut fittings to stay together. We stock and supply aviation nuts that are guaranteed to meet original equipment specifications for vibration resistance, corrosion resistance, and durability.
Plugs
Aircraft incorporate various plugs to seal sections of the engine, hydraulic system, and other vital systems of the aircraft. These plugs range from bleeder screw plugs to square head pipe thread plugs, as well as flared tube plugs and others.
Summary
This should give you a summary of the types of fittings you might find in aircraft, all of which we can help you source supplies of. These fittings, while often small parts, are crucial to the safe and effective operation of your aircraft, so it is important that just as much care be given to the fittings as to the more major components of the aircraft.
