We specialize in SAE/BSP/METRIC hydraulic adapters and fittings.

What does jic mean for hydraulic fittings


Hydraulic systems are indispensable components in modern mechanical equipment, with JIC hydraulic fittings playing a crucial role as integral components within these hydraulic systems. Exploring the significance behind the acronym "JIC," its origins, standards, characteristics, advantages, applications, usage guidelines, differences from AN hydraulic fittings, and more, provides valuable insights into this essential topic.
What does jic mean for hydraulic fittings 1

1.Overview of JIC Hydraulic Fittings

JIC hydraulic fittings are common hydraulic connectors used to join pipes and hoses in hydraulic systems, facilitating the transfer and control of hydraulic fluids. Designed to ensure reliable sealing performance and possess excellent pressure resistance, these fittings are suitable for high-pressure hydraulic systems.

2.Origin of JIC

JIC stands for Joint Industry Council, an abbreviation originating from a collaborative industry committee formed by hydraulic professionals in the early 20th century. This committee standardized specifications and dimensions related to hydraulic fittings, ultimately resulting in the establishment of the JIC hydraulic fittings standards.

3.Standardization of JIC Threads

One of the crucial features of JIC hydraulic fittings is their thread standardization. They utilize the UNF (Unified National Fine) thread standard, characterized by a higher thread count, facilitating tight sealing and making them suitable for high-pressure hydraulic systems. The following are specific steps for inspecting JIC hydraulic fittings using a thread gauge:



Prepare a standard UNF thread gauge, ensuring its accuracy and compliance.

Ensure the surface of the tested JIC hydraulic fitting is clean and free from visible damage.


Select the Appropriate Thread Gauge:

Choose the suitable UNF thread gauge based on the specifications of the JIC hydraulic fitting.


Measure Thread Diameter:

Slowly and uniformly thread the gauge into the hydraulic fitting.

Ensure the gauge fully enters the thread without excessive tightness.

Use the scale or digital readout on the thread gauge to measure the thread diameter.


Measure Thread Pitch:

Thread the gauge to the appropriate depth and then unthread it, observing the distance between thread peaks.

Use the scale or digital readout on the thread gauge to measure the thread pitch.


Measure Thread Height:

Slowly thread the gauge along the peak of the thread into the hydraulic fitting.

Observe the position where the thread gauge and hydraulic fitting threads meet, measuring the thread height using the scale or digital readout on the gauge.


Compare Measurements with Standards:

Compare the measured diameter, pitch, and height with the relevant standards.

If the measurements fall within the allowable tolerance range, the fitting complies with standards; otherwise, further inspection or replacement may be necessary.


Record Measurements:

Record the measurement results, including diameter, pitch, height, etc.

Record the measurement date and the operator's information.

4.Characteristics of JIC Hydraulic Fittings

Reliable Sealing Performance:
JIC hydraulic fittings employ a conical sealing design to ensure excellent sealing performance under high-pressure conditions.

Ease of Installation: The threaded design of JIC fittings makes them easier to install and dismantle, enhancing maintenance efficiency.

Versatility: Suitable for various hydraulic systems, including industrial equipment, aerospace, and more.

5.Advantages of JIC Hydraulic Fittings


High-Pressure Resistance: JIC hydraulic fittings maintain reliable connections under high-pressure conditions, ensuring the normal operation of hydraulic systems.

Corrosion Resistance: Constructed using corrosion-resistant materials such as galvanized steel, 304, or 316 stainless steel, making them adaptable to harsh working environments.

Ease of Maintenance: Modular design facilitates easier maintenance and replacement of JIC hydraulic fittings.

6.Applications of JIC Hydraulic Fittings


JIC hydraulic fittings find widespread applications in various fields, including but not limited to:

Industrial hydraulic systems

Agricultural machinery

Aerospace equipment

Automotive manufacturing

Marine engineering

7.Differences Between JIC and AN Hydraulic Fittings


In hydraulic systems, JIC (Joint Industry Council) hydraulic fittings and AN (Army-Navy) hydraulic fittings are two common connecting components with apparent differences in design, standards, and applications.


Thread Standard and Structural Differences:

JIC hydraulic fittings utilize the UNF (Unified National Fine) thread standard. This conical thread has a higher thread count, facilitating a tighter connection that enhances resistance to high pressure, making it suitable for high-pressure hydraulic systems.

In contrast, AN hydraulic fittings adopt the NPT (National Pipe Thread) standard. Although also a conical thread, it has fewer threads and is typically used for pipe thread connections, making it suitable for low-pressure hydraulic systems such as automotive hydraulic brake systems and fuel transfer systems.


Differences in Application Areas:

Due to its UNF standard thread and high-pressure resistance, JIC hydraulic fittings are widely used in high-pressure hydraulic systems such as industrial hydraulic systems, agricultural machinery, and aerospace equipment.

AN hydraulic fittings, with NPT threads, are more suitable for low-pressure liquids and gas transfer. Therefore, they are more commonly found in relatively low-pressure hydraulic systems like those in aircraft, automobiles, and ships.


While JIC and AN hydraulic fittings may appear similar on the surface, the differences in design standards, thread structures, and application areas make them suitable for distinct hydraulic systems. When selecting hydraulic fittings, factors such as system pressure requirements, application scenarios, and thread standards should be considered to ensure the performance and safety of the hydraulic system.

8.Key Points in Using JIC Hydraulic Fittings

Proper Installation:
Ensure correct installation of JIC fittings, following the manufacturer's installation guidelines.

Regular Inspection: Periodically inspect the fittings for sealing performance to detect and address potential issues promptly.

Avoid Over-Tightening: Prevent damage to fittings and preserve sealing performance by avoiding excessive tightening of threads.

9.Why Choose NJ as the Supplier for JIC Hydraulic Fittings?

Selecting an appropriate supplier for hydraulic fittings is crucial in the design and operation of hydraulic systems. NJ, as a supplier of JIC hydraulic fittings, offers a range of unique advantages that make it a reliable partner:


Extensive Experience: With over 20 years of production and export experience in the hydraulic industry, NJ possesses rich technical knowledge and industry insights, ensuring a deep understanding of customer needs and maintaining a leading position in the market.


Quality Assurance: NJ prioritizes product quality, subjecting all hydraulic fittings to rigorous quality control and testing. Conforming to international standard production processes ensures the reliability and durability of products, guaranteeing the safe operation of hydraulic systems.


Customization Capability: NJ excels in customization, providing personalized hydraulic fitting solutions tailored to specific customer requirements. Whether it's special sizes, materials, or sealing requirements, NJ can meet customer customization needs, offering bespoke solutions.


Wide Product Range: As a specialized hydraulic fitting supplier, NJ boasts a diverse product line covering various specifications and types of JIC hydraulic fittings. This allows customers to obtain a variety of products from a single supplier, simplifying the procurement process.


Advanced Production Technology: NJ employs advanced production technology and equipment, with over 200 fully automated CNC machines ensuring precise and sophisticated manufacturing processes. Advanced production technology not only enhances product quality but also increases production efficiency, ensuring timely delivery of hydraulic fittings.


Timely After-Sales Service: NJ places a high emphasis on customer satisfaction, providing timely after-sales service. Whether it's technical support during installation or maintenance advice during usage, NJ promptly responds to customer needs, ensuring the normal operation of hydraulic systems.


Mature Quality Management System: NJ has established a robust quality management system, holding certifications such as ISO9001:2015, indicating adherence to international standards. This system demonstrates NJ's high level of responsibility for product quality, providing customers with a reliable quality guarantee.


User Reputation and Case Studies: User reviews and case studies reveal that NJ has garnered excellent user satisfaction, with a high approval rating of 99.9%. Successful case studies not only attest to NJ's professionalism but also indicate a trustworthy reputation in the field of hydraulic fittings.


In conclusion, the selection of NJ as a supplier for JIC hydraulic fittings is based on its extensive experience, quality assurance, customization capability, wide product range, advanced production technology, timely after-sales service, mature quality management system, and positive user reputation with successful case studies. These factors collectively ensure that NJ can deliver high-quality and reliable hydraulic fitting products, contributing to the efficient operation of customer hydraulic systems.



In the design and operation of hydraulic systems, JIC hydraulic fittings play a vital role. Through an in-depth understanding of JIC hydraulic fittings, including their overview, origin, standards, inspection procedures, characteristics, advantages, applications, usage guidelines, differences from AN fittings, and supplier selection such as NJ, we gain comprehensive insights into the crucial role of these hydraulic components in engineering applications. Choosing NJ as the supplier for JIC hydraulic fittings is not only based on its rich experience, quality assurance, customization capability, and advanced production technology but also ensures the efficient operation of hydraulic systems through careful inspection and maintenance. In the ever-evolving technological landscape, a deep understanding of JIC hydraulic fittings becomes a cornerstone in the design and maintenance of hydraulic systems.




Do you know ORFS hydraulic adapters
How to disassemble hydraulic adapter
recommended for you
no data
Get in touch with us
-86 15706836862
151 Hongxing Road, Chunhu Street, Fenghua District, Ningbo City, Zhejiang Province, China, 315506.
Contact With Us
Contact person: Fenny He
Tel: +86 15706836862
Contact person: Ting He
WhatsApp:+86 15606680672
Monday - Friday: 8am - 5pm  Saturday: 9am - 4pm
Copyright © 2024 NingBo NJ Hydraulic Adapter Co., Ltd- lifisher.com | Sitemap
Contact us
contact customer service
Contact us
Customer service