SAE fittings are typically made of steel and have a 45-degree flare, making them well-suited for use in systems that don’t experience high levels of stress or pressure. AN Fittings vs SAE Fittings: Key Differences Then JIC (The Joint Industry Council) came along and use the AN standard as a basis for their own standard. They essentially just ratified the parts to reduce the part count. The tolerances allowed are more lenient for JIC fittings too, compared to AN fittings.

Today, AN fittings are widely used in various industries and applications, including automotive and aerospace. Understanding AN Fitting SizesMany brands offer AN fittings, and it’s important to choose a reputable brand that offers high-quality products. Reputable brands are more likely to offer fittings that meet your specific requirements and are designed to last. Originally, everybody had their own system for hydraulic couplings, a lot were similar, but not compatible with each other causing confusion and a parts nightmare. So finally the military got involved and created the AN (Army-Navy) connector standard. The AN standard defines tight tolerances and defines every type of fitting (and adaptor) available.

AN fittings are a flare fitting, using 37° flared tubing to form a metal-to-metal seal. They are similar to other 37° flared fittings, such as JIC, which is their industrial variant. [2] The two are interchangeable in theory, though this is typically not recommended due to the exacting specifications and demands of the aerospace industry. The differences between them relates to thread class and shape (how tight of a fit the threads are), and the metals used. Although similar, 37° AN and 45° SAE fittings and tooling are not interchangeable due to the different flare angles. Mixing them can cause leakage at the flare. The line drawings below depict the actual sizes of the various common types of fittings, hose ends and adapters. The number is SAE spanner size equivalent. By understanding the history of AN fittings, their sizes, types, and applications, and choosing the right fittings for your specific needs, you can ensure that your system runs smoothly and safely. On SAE 37° Flare fittings, the male and female threads are made according to class 2A/2B UN/UNF series threads. Fastener classes 2A and 2B are designed for optimum thread fit that balances fastener performance, manufacturing, economy, and convenience. AN and JIC (SAE J514 standard) both have a 37° flare connection on the male and female sides of the fitting and straight threads. A seal is achieved by threading in the JIC male flared connection with the female coned connection.

Comparison of AN and SAE Fittings

The line drawings below depict the actual sizes of the various common NPT thread sizes. If you are unsure as to what thread size you are using lay your fitting over the appropriate drawing to determine its size. AN fittings and SAE fittings are two commonly used types of fittings in the automotive industry. Understanding the difference between the two is important when it comes to selecting the right fitting for your needs. AN Fittings

The line drawings below depict the actual sizes of the various common AN/ORB thread sizes. If you are unsure as to what size fitting you have lay your fitting over the appropriate drawing to determine its size. NOTE: - AN and ORB thread are the same diameter. AN seals with the flare, ORB seals with an O-ring. AN fittings are designed to provide leak-free connections, ensuring that fluids or gases are contained within the system. This is particularly important in applications where the safety of the system or the environment is a concern. Durability N fittings are typically made of lightweight aluminum and have a 37-degree flare, making them suitable for use in high-stress and high-pressure systems. They can be found in fuel, oil, and cooling systems, as well as in turbocharger and nitrous oxide systems. AN fittings are also commonly used in custom automotive builds and modifications, where the builder or racer wants to create a unique and high-performance system. AN fittings are essential components in various industries, especially in automotive and aerospace. They are designed to provide flexible, leak-free connections, and are available in a range of sizes and designs.AN fittings are available in a variety of materials, including aluminum and stainless steel. It’s important to choose the right material for your application, based on factors such as strength, weight, and resistance to wear and tear. Brand

Brake systems are critical components in any vehicle, providing the necessary stopping power. AN fittings are often used in high-performance brake systems, as they can handle high-pressure brake fluid and provide a leak-free connection. Advantages of Using AN Fittings Originally parts were made compliant to the specification MIL-F-5509, but they are now controlled under SAE AS (Aerospace Standards) specifications AS4841 through AS4843 and AS4875. AN fittings are available in a variety of shapes and designs, including straight, 45-degree, and 90-degree elbows, and tees. You can use these fittings in a variety of applications, including: Fuel Lines The terms AN and JIC are used interchangeably in aftermarket automotive hydraulic systems. Mainly the system is used for fuel and oil systems. Occasionally it is also used for coolant systems, but it is pretty rare. What we’re after in reality are AN fittings, because they offer the best dimensional tolerances, and sealing surface finishes. Not all fittings that look the same, are the same! In Motorsport ¶ When choosing AN fittings for your application, there are several factors to consider, including: Hose SizeSAE fittings are identified by their SAE size (ie: SAE-3, SAE-4, SAE-5, etc.) and designed to meet SAE specifications and standards. Where are SAE Fittings Used? So remember: dash size is the size of hose, tube or fittings expressed in sixteenths of an inch. Hoses are measured by inside diameter, and tubes are measured in outside diameter. AN fittings offer excellent hose flexibility, which is crucial in performance applications. The flexible hoses connected to the AN fittings can bend and move without causing any damage to the fittings, which is essential in high-vibration applications. Leak-Free Connections