What Are An Fittings

February 25, 2024 Post a Comment

What are an fittings

Historical Context of the AN Fitting AN stands for Air Force – Navy Aeronautical Design Standards (also known as “Army Navy”) that are used in U.S. Military aviation applications. These fittings are made to meet strict performance standards related to the aeronautical industry.

What is an AN type fitting?

AN fittings are a particular type of fitting used to connect flexible hoses and fluid-carrying metal tubing together. The name is derived from a standardized joint agreement between the Army and Navy during World War II regarding the size specification of the fitting. A-N, therefore, stands for Army-Navy.

Where are AN fittings used?

AN fittings and hoses are often found installed on high performance and race cars. AN hoses are used for fuel, oil, coolant and hydraulic fluids. AN stands for Army-Navy as the specification was developed based on a standard for flexible fluid connections used during World War II.

How does an AN fitting work?

AN fittings feature a special 37 degree flare to create a metal to metal seal when they are connected, and are NOT the same as flare fittings you find at the hardware store. Those fittings have a 45 degree flare and WILL NOT WORK WITH AN! Don't use hardware store parts to plumb your next project!

ARE AN and NPT the same?

Aside from thread sizes, the most important difference between AN and NPT threaded fasteners is that NPT uses a tapered thread. That's a fancy way of saying the bolt is actually slightly smaller at the tip than the base. It's designed that way to firmly seat the male and female threaded ends together.

What size hose is 6AN?

[Size] ID of 6an fuel hose:0.34"(8.63mm),OD:0.54"(13.71mm).

What are the 4 types of fittings?

Coupling, Adapter, Bushing and Union Fittings For example, an adapter could be fitted on the end of a plain pipe to allow a threaded connection at the other side of the adapter. Bushing Fittings - Bushings, sometimes called reducer bushings, are used for connecting two pipes of different sizes.

What is the difference between an and JIC fittings?

JIC fittings are dimensionally identical to AN (Army-Navy) fittings, but are produced to less exacting tolerances and are generally less costly. SAE 45-degree flare fittings are similar in appearance, but are not interchangeable, though dash sizes 2, 3, 4, 5, 8, and 10 share the same thread size.

What thread is a an fitting?

AN fittings have straight thread, and use O-ring seals. The O-ring size is typically defined by the “AS” standard. Dash numbers are typically assigned based on the size. Boss-seal style O-rings are typically in the 900 series.

Why are AN fittings so good?

“People use AN fittings because they look cool and provide a secure fitting that seals hoses better than traditional push-on nipples and hose clamps,” explains Kanga Motorsports. “They form a serviceable connection that provides a reliable seal.”

Can you use regular AN fittings on PTFE hose?

PTFE hose is too stiff for hose clamps. It won't “crush” onto a fitting to create a good seal, like a conventional clamp. So, unique aluminum AN fittings (developed by TechAFX) must be used to secure the new hoses.

ARE AN fittings reusable?

This Ferrule is what compresses within the fitting and creates the seal and prevents leaks. Note: That while these fittings are reusable the Ferrule is not, once the fitting has been tightened and the ferrule compressed you must use a new ferrule if you reinstall the fitting.

Can I use NPT on an fittings?

In a fuel system using AN Fittings, it is very common to use an “NPT” (Nation Pipe Thread) in conjunction with the AN fittings. These NPT threads DO require the use of a tape to create the seal, where the AN fitting do NOT. When using an NPT fitting, it is common for you to only get a few turns out of the fitting.

Are SAE and NPT interchangeable?

What's the difference between SAE & NPT threads? The biggest difference is SAE is a straight thread, it needs additional O-ring, gasket or sealing surface to form a seal; NPT thread is a taper thread, it can form a seal using its thread pitch.

What does SAE threads stand for?

What is SAE thread? SAE stands for the Society of Automotive Engineers. SAE fittings are mostly used in refrigeration, automotive piping systems and other low-pressure applications. It's common for copper tubes to be used with SAE threads.

How do you size an AN fitting?

You can always identify AN fittings based on the male thread size (outside diameter). These sizes are constant regardless of brand, hose type, or fitting configuration. If your fitting has a convex 37 degree flare at the end, the threads will tell you the AN size (and vice-versa).

How do you read a fitting size?

From one inch that gives you three quarters. So you're gonna need a three quarter inch male pipe to

What does 8 an mean?

The AN numbers refer to the tubing OD in sixteenths of an inch. For example, 8AN hose has the same ID as a 1/2" nominal tube (8/16 = 1/2). 3AN hose has the same ID as a 3/16" tube. This means that 6AN hose will not introduce any appreciable flow restriction in a fuel system designed around 3/8" OD rigid tubing.

What are the 5 common types of fittings?

Different pipe fittings and their functions are explained below.

Elbow.
Reducer.
Tee type.
Cross type.
Coupling.
Unions.
Adaptors.
Olet.

What is the most common fitting used?

A tee, the most common pipe fitting, combines or divides fluid flow. Tees can connect pipes of different diameters, change the direction of a pipe run, or both.