An Fitting - Whats An AN 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 does the O-ring go on an AN fitting?

It seals when the O-ring is compressed into the chamfer when mating the male connection. The O-ring in an O-ring boss fitting seats between the threads and wrench flats, and is positioned around the OD of the male end of the fitting.

How do I know what size hose I need?

Hose sizes are designated based on the inner diameter of the hose, which is the measurement of the straight distance between the two furthest points on the inner surface of the tube. Virtually all hoses made globally are made on inch sizes even if given a metric size designation.

What is the difference between Orb and an fittings?

Advantages of ORB Fittings Adjustable o-ring fittings are typically elbows or tees that are installed in a fixed direction. Non-adjustable o-ring fittings are usually plugs and straight connectors that are fitted into a port without the need for alignment.

Why use an AN fitting?

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. They form a serviceable connection that provides a reliable seal.

What size is an 6 fuel line?

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

Do AN fittings need O rings?

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.

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 is a 8 an fitting?

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.

Do an fittings need sealant?

Thread sealant ONLY gets used on NPT fittings with tapered threads. AN fittings should not get sealant. It won't hurt, but it won't help in any way. Take a look at how the fitting seals with its mate.

Where is speedflow made?

Performance Hose Fittings made in Australia - Speedflow Products Pty Ltd.

Why are AN fittings better?

“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.”

How many mm is AN6?

FITTING SIZE	HOSE O.D.	E
-3	3/16″ (4.76mm)	0.625
-4	¼″ (6.35mm)	0.688
-6	⅜″ (9.53mm)	0.813
-8	½″ (12.70mm)	1.000

ARE AN fitting NPT?

AN port threads are not NPT or “pipe thread.” Instead, they use straight threads (like any normal fastener) and an SAE O-Ring Boss (ORB) for sealing. AN lines, ORB ports, and the appropriate port adapter fittings are measured in inch/fractional sizes. AN line sizes will have a dash (-) preceding the line size.

How big is 6AN hose?

Male Thread Size	AN Size*	Hose ID**
3/8-24	3AN	0.13″ **
7/16-20	4AN	0.22″
9/16-18	6AN	0.34″
3/4-16	8AN	0.44″

ARE AN and JIC the same?

JIC Steps In The majority of the hydraulic population agrees, the JIC (or SAE) 37 degree fittings are generally interchangeable with AN fittings.

What size is 6AN fitting?

Product detailsProduct details. Size: AN6 to 1/2 NPT,the thread size of 6AN is 9/16-18UNF.

What angle is a an fitting?

The U.S. Air Force, with help from Wright Patterson Air Force base, developed a fitting with 37° flare angle, before WWII, which became known as the "AN" fitting.

What is the difference between SAE and JIC?

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.

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.