An Fitting Manufacturer In China

– Made of aluminum

– Long service life

– Easy to install

– Reusable

Product List

AN Fittings are standardized connection fittings designed for high-performance fluid transfer systems, which are widely used in automotive, aerospace, and industrial applications. We offer various types of AN fittings, such as right angle fittings, elbows, T-fittings, threaded fittings, etc. to meet different fluid connection needs. Each AN fitting is well-designed to provide strong pressure resistance and reliable sealing performance.

An Fitting video

In our product video, you’ll see a variety of straight AN fittings designed for seamless fluid connection in high-performance systems. These fittings are ideal for applications where a direct flow path is needed, providing secure, leak-free connections in automotive, racing, and industrial setups.
The video also highlights T and cross AN fittings, which are used for splitting or merging fluid flow in complex systems. These fittings offer flexible flow direction management, ensuring compatibility and efficient distribution across multiple channels.
Through the video, you’ll observe how Topa’s AN fittings are manufactured with precision machining and high-strength materials. Designed to withstand extreme pressure and harsh environments, these fittings offer superior durability, ensuring long-lasting performance and reliability in demanding applications.

Application

Topa AN fittings are primarily used for instrument adapter fittings and are suitable for use with thermometers and related applications. Topa offers a full line of AN series products which include brake lines, racing hoses, adapters, hose bottoms, couplings, and more for tubing needs. These AN fittings are used in power steering systems as reverse flare fittings or cam fittings.

Get in Touch with Us Today!

Contact Topa now to find the perfect AN fittings for your system. Our expert team is ready to help you choose the right materials, sizes, and solutions for optimal performance.

An Fittings Features

Working Principle

AN fittings are designed to provide secure, leak-free connections in high-pressure fluid systems, typically used in industries such as automotive, aerospace, and industrial machinery. The working principle of AN fittings is based on their 37-degree flare design, which ensures a tight, reliable seal when paired with corresponding AN hoses. The flare angle compresses the hose against the fitting’s seating surface, creating a strong, pressure-resistant bond that prevents leaks, even in extreme conditions. These fittings are engineered to handle high-pressure fluids and gases, maintaining optimal flow and efficiency within the system.

Structural Features

AN fittings are precision-engineered components that consist of several key structural elements:

Body: The main part of the fitting, typically cylindrical, which connects to hoses or pipes via threads or a flare.

Flared End: The critical part of the fitting where the hose is inserted and compressed. The 37-degree flare ensures a strong seal.

Threaded Interface: AN fittings often feature either male or female threads, which allow the fitting to be securely connected to other parts of the system, ensuring a stable and leak-proof joint.

Coupler and Adapter Design: AN fittings come in a variety of configurations, including straight, elbow, T-joints, and crosses, allowing flexibility in system design and ensuring fluid is directed precisely where needed.

Material Characteristics

AN fittings are typically made from materials selected for their strength, durability, and resistance to corrosion. The most common materials include:

Aluminum: A lightweight, corrosion-resistant material widely used for AN fittings in racing and aviation applications. Aluminum fittings are prized for their low weight and good performance under high-pressure conditions.

Stainless Steel: For higher strength and resistance to extreme environments, stainless steel is often used in AN fittings. Stainless steel offers superior durability and corrosion resistance, making it ideal for harsh industrial applications.

Brass: Sometimes used in AN fittings for applications that require excellent corrosion resistance in lower-pressure systems.

AN Fitting Size

AN fitting sizes are based on the inner diameter of the hose they are designed to fit, measured in sixteenths of an inch. The number associated with the AN fitting corresponds to this measurement. For example, an AN-6 fitting is designed for a hose with a 3/8-inch inner diameter (6/16 inch). Here are some common sizes:

AN-4: 1/4 inch ID hose (4/16 inch)

AN-6: 3/8 inch ID hose (6/16 inch)

AN-8: 1/2 inch ID hose (8/16 inch)

AN-10: 5/8 inch ID hose (10/16 inch)

AN-12: 3/4 inch ID hose (12/16 inch)

The AN sizing system ensures compatibility between hoses and fittings, allowing for precise fluid flow management. The fittings’ size refers to the hose’s inner diameter, not the outer diameter.

Advantages of AN fittings

High Pressure Resistance

AN fittings are designed to withstand high-pressure environments, making them ideal for demanding applications in motorsports, aviation, and industrial systems. Their 37-degree flare creates a strong, leak-proof seal that holds up under extreme pressure.

Durability and Strength

AN fittings are typically made from high-strength materials like aluminum or stainless steel, ensuring long-lasting performance in harsh environments. These materials provide excellent resistance to corrosion, fatigue, and wear.

Customizable and Versatile

AN fittings come in various shapes, sizes, and configurations (straight, elbow, T, and cross), offering great flexibility to suit different fluid system designs. They can be used with a variety of hose types and other components, allowing for customization based on specific needs.

Easy to Install and Maintain

AN fittings are designed for ease of installation. The flare design creates a reliable seal without requiring additional sealing materials like tape or gaskets. Maintenance is also simplified since the fittings are easy to inspect and replace as needed.

Leak-Free Connections

The 37-degree flare angle of AN fittings ensures a secure, leak-free connection when installed correctly. This makes them ideal for high-performance systems where preventing leaks is critical to both safety and efficiency.

Aesthetic Appeal

AN fittings are available in various finishes, including anodized colors like red, blue, and black, allowing them to be visually appealing in show cars, race cars, and custom builds. This provides both functional and aesthetic value, especially in performance and racing environments.

Order Now for Fast Delivery!

Don't wait—experience the reliability of Topa AN fittings. Place your order today and enjoy fast delivery with top-quality products that meet your exact specifications.

An vs SAE Fittings

AN (Army-Navy) and SAE (Society of Automotive Engineers) fittings are both used in fluid and gas systems, particularly in high-performance and industrial applications. However, they differ in design, application, and performance. Here’s a comparison of the two:

Flare Design

AN Fittings: Use a 37-degree flare, which creates a strong, leak-proof seal. The flare angle ensures a tight fit between the hose and the fitting.

SAE Fittings: Typically use a 45-degree flare (in the case of SAE J514) or flat face fittings, which also provide secure connections but with a different sealing method compared to AN fittings.

Thread Type

AN Fittings: Feature a specific set of threads (e.g., 1/8″ NPT, 1/4″ NPT) and are designed for use with standard AN-sized hoses. The threads do not seal; instead, the flare seals the connection.

SAE Fittings: Primarily use straight threads (SAE J514) or tapered threads (SAE J1926) for sealing. The threads themselves provide the seal, unlike AN fittings where the flare provides the sealing mechanism.

Size Designation

AN Fittings: Size is designated based on the inner diameter of the hose in sixteenths of an inch. For example, an AN-6 fitting corresponds to a hose with a 3/8″ internal diameter.

SAE Fittings: Typically designated by their nominal size in inches, such as SAE 10, which refers to a 5/8″ diameter connection. SAE sizes are more standardized and based on pipe size rather than inner hose diameter.

Usage

AN Fittings: Primarily used in aerospace, racing, and high-performance automotive applications, where durability, precision, and high-pressure resistance are critical.

SAE Fittings: Widely used in industrial and hydraulic applications, especially in systems that require a secure, tight connection in low- to medium-pressure environments.

Sealing Mechanism

AN Fittings: Rely on the 37-degree flare at the end of the fitting to create a tight seal when paired with a corresponding flare hose. No additional sealant is needed.

SAE Fittings: Depend on thread seals or O-rings for a tight seal. SAE fittings often use flat face seals or tapered threads to ensure a leak-proof connection.

Material Options

AN Fittings: Made from lightweight and corrosion-resistant materials like aluminum or stainless steel. These materials are well-suited for high-performance applications.

SAE Fittings: Can also be made from a variety of materials, including steel, stainless steel, brass, and aluminum. The material choice depends on the application and the required pressure and environmental conditions.

Pressure Rating

AN Fittings: Typically designed for higher pressure ratings, making them suitable for high-performance and extreme pressure applications, such as racing, aerospace, and fluid transfer systems.

SAE Fittings: Generally designed for medium-pressure hydraulic applications. Although SAE fittings can handle high pressure, they are not typically used in systems requiring the extreme pressure tolerance that AN fittings offer.

Compatibility

AN Fittings: Not directly compatible with other types of fittings, such as SAE or BSP. Special adapters are often required to connect AN fittings to other systems.

SAE Fittings: SAE fittings are commonly used in industrial hydraulic and fluid systems and are often compatible with other standard hydraulic components, making them more versatile for various industrial setups.

Avoid Common Pitfalls

At Topa, we are committed to providing you with the highest quality products and solutions that eliminate common pitfalls in fluid connection systems. With our expertise and dedication to excellence, we ensure that you receive the most reliable AN fittings tailored to your specific needs.

Material Selection

Not all materials are suitable for all applications. For example, using aluminum AN fittings in high-corrosion environments (such as marine applications) may result in premature failure. Always select the appropriate material—aluminum for lightweight applications or stainless steel for higher durability and corrosion resistance.

Sizing Mistakes

AN fitting sizes are based on the hose inner diameter, not outer diameter. Using an incorrectly sized fitting can cause leaks, poor performance, or damage to the system. Always match the fitting size (e.g., AN-6 for a 3/8" hose) to the hose and system specifications to ensure a secure and effective connection.

Color Selection Pitfalls

While color might seem purely aesthetic, it can also be useful for quick identification and organization in complex systems. Ensure that the color of the AN fittings matches your system requirements and does not interfere with heat dissipation or other functional factors.

Vehicle Compatibility

Some vehicles, especially performance or classic models, may require custom or brand-specific AN fittings for proper fitment. Using universal AN fittings without considering vehicle-specific needs can result in improper connections or failure.

Request a Custom Quote!

Need specific sizes or materials for your project? Reach out to Topa and get a personalized quote tailored to your unique requirements. We’re here to ensure you get the best solution at the best price.

Your Reliable An Fitting Manufacturer

An Fitting and hose ends are fragile and hose ends feature a one-piece design, stainless steel lock wire, and J- threads for strength and leak-free performance.

Male O-ring boss fitting with O-ring, male AN / JIC flared 37-degree thread

Capable of reuse
Lifetime manufacturer’s warranty
Lightweight black anodized aluminum construction
Excellent design for long service life
Good work performance for increased efficiency

Why Choose Us

Topa is a state-of-the-art manufacturing facility with high-precision fabrication machines, punch presses, CNC lathes, 3-axis CNC machines, and 5-axis CNC machines. This supports our strong capabilities for any hose end fitting project. We can handle them easily.

–Professional Team

With our knowledgeable engineering and manufacturing team, we are sure we can provide you with the right solution to meet your needs. To learn more about our hose fitting program, please contact us.

–Quality Assurance

Topa strives for high-quality products and is ISO9001 certified. We can guarantee quality and service for any individual project for our customers.

–Production Quantity

We can handle OEM and ODM projects. Also, we can handle any number of jobs, including prototyping, low volume, and high volume production orders.

–Production tools

We have over 50 cold forged tools available for many typical AN hose fitting projects. As a result, we can offer many fabrication options for assembly projects.

–Material Guarantee

Topa can supply fittings in different materials, such as aluminum, stainless steel, brass, and PTFE. We can supply fittings at very competitive prices.

FAQ

What is AN fitting?

AN fittings are a special type of coupling for connecting hydraulic hoses and liquid-carrying metal tubes together.

What is -8 AN fitting?

-8 AN connectors are converted to 8/16 inch or 1/2 inch. You can convert any AN fitting to its nominal inch size by dividing the AN number by 16

What thread is AN fitting?

Each AN fitting has a different thread size. AN fittings are sealed by a 37° flare tube that connects metal to metal.

What are AN fittings used for?

AN fittings can be found in the transport and connection of fuel-based liquids, using AN fittings to connect transport hoses to metal pipes, such as trucks and other heavy machinery.

What is the difference between An and JIC fittings?

Most customers choose it AN fittings standards are more stringent than JIC fittings, both can be used in agriculture, construction, refuse, and other industries

Do AN fittings need O-rings?

Normal AN fittings is sealed metal-to-metal and when the interface is tightened as specified, the PSI at both joints is very high and therefore no O-ring is required.

Why does AN fittings leak?

When improper installation methods are taken, the pipe is corroded or the torque on the pipe is too heavy, there is damage or forced pressure is applied, there is a chance of leakage

Are AN fittings reusable?

Yes. But you need to check the threads for damage before reusing them, because repeated assembly and disassembly can deform the threads and the collar is not reusable.

What tools and equipment does I need for AN fitting ?

Mounting accessories are made of aluminum and usually consist of wrenches, pliers, special tape, and cutters. Some wrenches are made of anodized aluminum to minimize damage to the joint surface.

What is the difference between An fittings and An adapters?

AN fitting consists of a thread corresponding to the port of the part and a thread corresponding to the threaded form of the end of the hose. An adapter is an interconnection of two or more threaded forms or sizes for connection.

An Fitting Manufacturer In China

– Made of aluminum

– Long service life

– Easy to install

– Reusable

Product List

Hose Ends

An Banjo Fitting

An Push Lock

An Bulkhead

ORB An Fitting

An Tee

Sensor Adapter Fitting

An Adapter

Flare An Union

NPT to An Fitting

An O-ring Fitting

An Reducer

An Cap Fitting

An Fitting Radiator

An Hard Line Fitting

An Y Fitting

Barb to An Fitting

An Brake Line Fitting

AN Fitting Fuel Line

An Quick Disconnect

Weld on An Adapter

An Aluminum Hydraulic Fitting

An Hydraulic Hose

An Fitting Power Steering

An Fitting Wrench