JIC stands for Joint Industrial Council. JIC hydraulic fittings feature a 37° cone seal and are widely used in high-pressure oil connections. They offer reliable sealing and high-pressure resistance.
JIC fittings are sometimes also called 74-degree cone seals. They are essentially the same thing, as they combine two 37-degree cones to create a total angle of 74 degrees.
jic fittings sealing
JIC Fittings Applications
JIC standard fittings are primarily used in automotive hydraulic systems, high-pressure oil lines for industrial equipment, and construction machinery, enabling quick assembly and disassembly.
JIC standards cover the specification of connectors, rivets, valves, fittings, and other related products. In these industries, the build quality of components like connectors and tubing is crucial, and JIC’s standardization work helps ensure the consistency and reliability of these critical components. Unified standards enable better collaboration and improvement between manufacturers and suppliers, ensuring more consistent product quality across a wide range of applications.
JIC FIttings Common Types
- Straight Fittings: Used for straight pipe connections and feature a removable design.
- Elbow Fittings: Includes right-angle elbows, 45° elbows, and other fittings, used for pipe diversion.
- Quick Connectors: Some JIC connectors feature a self-locking feature and double O-ring seals for quick assembly and disassembly.
JIC fittings
JIC Male 74° Cone/ISO 8434-2/SAE J514-16711
1.Material: Carbon steel #45 /Stainless steel
2.Application: Used for 1SN/2SN hose.
3.Spiral hose fitting: 16712
4.One piece fitting: 16711F
| Part No. | Thread | DN | A | C | S1 |
|---|---|---|---|---|---|
| 16711-04-04 | 7/16″*20 | 6 | 26.5 | 14 | 12 |
| 16711-05-05 | 1/2″*20 | 8 | 26.5 | 14 | 14 |
| 16711-06-06 | 9/16″*18 | 10 | 26.5 | 14.1 | 17 |
| 16711-08-08 | 3/4″*16 | 12 | 32 | 16.7 | 22 |
| 16711-10-10 | 7/8″*14 | 16 | 35.5 | 19.3 | 24 |
| 16711-12-12 | 1-1/16″*12 | 20 | 40 | 21.9 | 27 |
| 16711-16-16 | 1-5/16″*12 | 25 | 43.5 | 23.1 | 36 |
| 16711-20-20 | 1-5/8″*12 | 32 | 47.5 | 24.3 | 46 |
| 16711-24-24 | 1-7/8″*12 | 40 | 53 | 27.5 | 50 |
| 16711-32-32 | 2-1/2″*12 | 50 | 62 | 33.9 | 65 |
JIC Female 74° Cone Seal/SAE J514-26711
1.Material: Carbon steel #45 / Stainless steel
2.Application: Used for 1SN/2SN hose.
3.T type fitting: 26711T
4.Spiral hose fitting: 26712
Part No. | Thread | DN | A | C | S1 |
26711-04-04 | 7/16″*20 | 6 | 15 | 9 | 15 |
26711-05-05 | 1/2″*20 | 8 | 15.5 | 9.5 | 17 |
26711-06-06 | 9/16″*18 | 10 | 155 | 10.5 | 19 |
26711-08-08 | 3/4″*16 | 12 | 18 | 11 | 24 |
26711-10-10 | 7/8″*14 | 16 | 20 | 13 | 27 |
26711-12-12 | 1-1/16″*12 | 20 | 21.5 | 15 | 32 |
26711-16-16 | 1-5/16″*12 | 25 | 23 | 16 | 41 |
26711-20-20W | 1-5/8″*12 | 32 | 26 | 17 | 50 |
26711-24-24W | 1-7/8″*12 | 40 | 26.5 | 20 | 55 |
26711-32-32T | 2-1/2″*12 | 50 | 27 | 23.5 | 75 |
JIC Female 74° Cone Seal Double Hexagon /SAE J514 - 26711D
1.Material: Carbon steel #45 /Stainless steel
2.Application: Used for 1SN/2SN hose.
3.Spiral hose fitting: 26712D
| Part No. | Thread | DN | A | C | S1 | S2 |
|---|---|---|---|---|---|---|
| 26711D-04-04 | 7/16″*20 | 6 | 20 | 9 | 15 | 15 |
| 26711D-05-05 | 1/2″*20 | 6 | 20.5 | 9.5 | 17 | 17 |
| 26711D-06-04 | 9/16″*18 | 6 | 21 | 10.5 | 19 | 19 |
| 26711D-06-06 | 9/16″*18 | 10 | 21 | 10.5 | 19 | 19 |
| 26711D-08-06 | 3/4″*16 | 10 | 25 | 11 | 24 | 24 |
| 26711D-08-08 | 3/4″*16 | 12 | 24.5 | 11 | 24 | 24 |
| 26711D-10-08 | 7/8″*14 | 12 | 28 | 13 | 27 | 27 |
| 26711D-10-10 | 7/8″*14 | 16 | 29 | 13 | 27 | 27 |
| 26711D-12-12 | 1-1/16″*12 | 20 | 31.5 | 15 | 32 | 32 |
| 26711D-16-12 | 1-5/16″*12 | 20 | 33.5 | 16 | 41 | 41 |
| 26711D-16-16 | 1-5/16″*12 | 25 | 34.5 | 16 | 41 | 41 |
| 26711D-20-20 | 1-7/16“*12 | 32 | 39 | 17 | 50 | 50 |
45° JIC Female 74° Cone Seal /SAE J514 - 26741
1.Material: Carbon steel #45 / Stainless steel
2.Application: Used for 1SN/2SN hose.
3.T type fitting: 26741T
4.Spiral hose fitting: 26742
| Part No. | Thread | DN | A | C | H | S2 |
|---|---|---|---|---|---|---|
| 26741-04-04 | 7/16″*20 | 6 | 40.2 | 9 | 18.1 | 15 |
| 26741-05-05 | 1/2″*20 | 8 | 42.7 | 9.5 | 19.3 | 17 |
| 26741-06-06 | 9/16″*18 | 10 | 44.3 | 10.5 | 20 | 19 |
| 26741-08-08 | 3/4″*16 | 12 | 58.6 | 11 | 23.5 | 24 |
| 26741-10-10 | 7/8″*14 | 16 | 70.1 | 13 | 25.3 | 27 |
| 26741-12-12 | 1-1/16″*12 | 20 | 77.4 | 15 | 30 | 32 |
| 26741-16-16 | 1-5/16″*12 | 25 | 85.7 | 16 | 31.5 | 41 |
| 26741-20-20W | 1-5/8“*12 | 32 | 96.6 | 17 | 35.9 | 50 |
| 26741-24-24W | 1-7/8“*12 | 40 | 111.8 | 20 | 44.1 | 55 |
| 26741-32-32W | 2-1/2”*12 | 50 | 135.9 | 23.5 | 51.6 | 75 |
90° JIC Female 74° Cone Seal /SAE J514 - 26791
1.Material: Carbon steel #45 /Stainless steel
2.Application: Used for 1SN2SN hose.
3.Spiral hose fitting: 26792
| Part No. | Thread | DN | A | C | H | S2 |
|---|---|---|---|---|---|---|
| 26791-04-04 | 7/16″*20 | 6 | 30 | 9 | 33.5 | 15 |
| 26791-05-05 | 1/2″*20 | 8 | 33 | 9.5 | 37 | 17 |
| 26791-06-06 | 9/16″*18 | 10 | 35.3 | 10.5 | 39.3 | 19 |
| 26791-08-08 | 3/4″*16 | 12 | 41 | 11 | 47 | 24 |
| 26791-10-10 | 7/8″*14 | 16 | 56.5 | 13 | 52.5 | 27 |
| 26791-12-12 | 1-1/16″*12 | 20 | 65.5 | 15 | 63.5 | 32 |
| 26791-16-16 | 1-5/16″*12 | 25 | 76.7 | 16 | 70 | 41 |
| 26791-20-20W | 1-5/8“*12 | 32 | 91.5 | 17 | 80.5 | 50 |
| 26791-24-24W | 1-7/8“*12 | 40 | 109.4 | 20 | 94 | 55 |
| 26791-32-32W | 2-1/2”*12 | 50 | 133.1 | 23.5 | 121.8 | 75 |
JIC Female 74 °Cone SAET Double Hexagon/ SAE J514-26711D-SM
1.Material: Carbon steel #45 / Stainless steel
2.Application: Used for 1SN/2SN hose.
3.Spiral hose fitting: 26712D-SM
| Part No. | Thread | DN | A | C | S1 | S2 |
|---|---|---|---|---|---|---|
| 26711D-04-04-SM | 7/16″*20 | 6 | 20 | 9 | 12 | 15 |
| 26711D-05-04-SM | 1/2″*20 | 6 | 20.5 | 9.5 | 12 | 17 |
| 26711D-06-04-SM | 9/16″*18 | 6 | 21 | 10.5 | 14 | 19 |
| 26711D-06-06-SM | 9/16″*18 | 10 | 21 | 10.5 | 17 | 19 |
| 26711D-08-08-SM | 3/4″*16 | 12 | 24.5 | 11 | 22 | 24 |
| 26711D-10-08-SM | 7/8″*14 | 12 | 24 | 13 | 22 | 27 |
| 26711D-10-10-SM | 7/8″*14 | 16 | 27 | 13 | 22 | 27 |
| 26711D-12-12-SM | 1-1/16″*12 | 20 | 31.5 | 15 | 27 | 32 |
| 26711D-16-16-SM | 1-5/16″*12 | 25 | 32.5 | 16 | 32 | 41 |
| 26711D-20-20-SM | 1-7/16“*12 | 32 | 37 | 17 | 41 | 50 |
Interlock JIC FEMALE 74 °Cone SAET Double Hexagon/SAE J514 -26713W
1.Material: Carbon steel #45 / Stainless steel
2.Application: Used for 4SP/4SH hose.
| Part No. | Thread | DN | A | C | S1 | S2 |
|---|---|---|---|---|---|---|
| 26713D-12-12W | 1-1/16″*12 | 20 | 37.5 | 15 | 30 | 32 |
| 26713D-16-16W | 1-5/16″*12 | 25 | 42.4 | 16 | 38 | 41 |
| 26713D-20-20W | 1-5/8“*12 | 32 | 47.3 | 17 | 46 | 50 |
| 26713D-24-24W | 1-7/8”*12 | 40 | 50.2 | 20 | 50 | 60 |
| 26713D-32-32W | 2-1/2″*12 | 50 | 52 | 23.5 | 65 | 75 |
90° JIC Female 74° Cone Saet / SAE J514 - 26791K
Material: Carbon steel #45 Stainless steel
Application: Used for 1SN/2SN hose
Spiral hose fitting: 26792K
| Part No. | Thread | DN | A | C | H | S1 | S2 |
|---|---|---|---|---|---|---|---|
| 26791K-04-04 | 7/16″*20 | 6 | 17.5 | 9 | 19 | 11 | 15 |
| 26791K-06-04 | 9/16″*18 | 6 | 19 | 10.5 | 21 | 14 | 19 |
| 26791K-06-06 | 9/16″*18 | 10 | 20 | 10.5 | 21 | 16 | 19 |
| 26791K-08-06 | 3/4”*16 | 10 | 23 | 11 | 25 | 19 | 24 |
| 26791K-08-08 | 3/4”*16 | 12 | 23.5 | 11 | 25 | 22 | 24 |
| 26791K-10-08 | 7/8″*14 | 12 | 23.5 | 13 | 27.5 | 22 | 27 |
| 26791K-10-10 | 7/8″*14 | 16 | 25 | 13 | 27.5 | 22 | 27 |
Why Are 37° Flared JIC Fittings The First Choice for Construction Machinery?
Key Advantages:
True Metal-to-Metal Sealing—Impervious to High-Pressure Pulsation:
Featuring a precision-engineered 37° flared sealing surface, these fittings require no composite gaskets or O-rings (thereby eliminating leaks caused by rubber aging). Under conditions of continuous vibration and high-pressure shock, their sealing performance far surpasses that of standard compression fittings.
Superior Resistance to Corrosion and Extreme Temperatures:
Compliant with SAE J514 and ISO 8434-2 standards. When paired with appropriate hose materials, they can withstand operating conditions ranging from extreme cold (-40°C) to high heat (+125°C), making them ideal for use in construction machinery, mining equipment, and offshore engineering applications.
Global Interoperability and Ease of Maintenance:
JIC threads (UN/UNF threads) constitute a globally recognized standard. Should equipment require emergency repairs at overseas job sites, matching spare parts can be easily sourced, thereby minimizing equipment downtime and reducing maintenance costs.
Strongflex provides high-pressure, leak-free hydraulic system solutions
Professional Technical Support: Our sales team consists of professionals who have undergone specialized technical training in hydraulic systems. Based on your descriptions or technical drawings, they can accurately recommend the most suitable hydraulic fittings for your specific needs. Furthermore, they are equipped to professionally diagnose issues—such as pulse-induced leaks or improper thread sealing—and provide practical, effective solutions.
Premium Raw Materials: We utilize high-quality carbon steel or stainless steel bar stock. Every batch of material is accompanied by a material certification, ensuring full traceability of its origin and quality. Samples are available upon request for your inspection and verification.
Post-Production Inspection: We conduct rigorous inspections on all finished fittings, verifying thread precision, flare angles, and dimensional accuracy. Additionally, we perform salt spray and burst pressure tests to assess the fittings’ pressure resistance and durability, thereby guaranteeing their safety and reliability during normal operation.
Rapid Delivery and Comprehensive After-Sales Service: We prioritize expedited production for all orders; even large-volume orders are shipped within the agreed-upon timeframe. We stand 100% behind every fitting we ship, providing full responsibility and support through our comprehensive after-sales service.
If you have any requirements regarding hydraulic fittings, please do not hesitate to contact our team of hydraulic experts at any time.
FAQS About JIC fittings
What does JIC mean in fittings?
In fittings, JIC stands for Joint Industry Council. It refers to a type of hydraulic fitting with a 37-degree flare seating surface, which creates a metal-to-metal seal.
JIC’s standard fittings are primarily used in the aviation, agriculture, construction, and automotive industries, encompassing connectors, rivets, valves, fittings, and other related products.
How do I know my JIC fitting size?
JIC sizes range from 1/8″ to 2″. To know the size of your JIC fitting, you should measure the outer diameter of the male thread or the inner diameter of the female thread, then count the number of threads and compare the value to the standard JIC size table to determine your connector size.
SAE J514 JIC fitting size chart
| JIC Size（inch） | Thread（UNF） | Thread outer diameter | Threads per inch（TPI） |
|---|---|---|---|
| 1/8″ JIC | 5/16″-24 UNF | 0.312″ (7.92mm) | 24 |
| 1/4″ JIC | 7/16″-20 UNF | 0.437″ (11.10mm) | 20 |
| 3/8″ JIC | 9/16″-18 UNF | 0.562″ (14.28mm) | 18 |
| 1/2″ JIC | 3/4″-16 UNF | 0.750″ (19.05mm) | 16 |
| 3/4″ JIC | 1-1/16″-14 UNF | 1.062″ (26.97mm) | 14 |
| 1″ JIC | 1-5/16″-12 UNF | 1.312″ (33.34mm) | 12 |
| 1-1/4″ JIC | 1-5/8″-12 UNF | 1.625″ (41.28mm) | 12 |
| 1-1/2″ JIC | 1-7/8″-12 UNF | 1.875″ (47.63mm) | 12 |
| 2″ JIC | 2-1/2″-12 UNF | 2.500″ (63.50mm) | 12 |
Are SAE and JIC fittings interchangeable?
What are the execution standards for JIC fittings?
SAE J514 standard, SAE J514 is an important standard for hydraulic fittings developed by the Society of Automotive Engineers (SAE). SAE J514 ensures the reliability and compatibility of these 37mm flared fittings, which are widely used in various hydraulic systems to ensure reliable connection and stable operation.
Do JIC fittings need teflon tape?
JIC fittings do not require the use of tape or sealants. They are sealed between metal and metal through the tapered surface and can form a good seal by themselves.
Can you reuse JIC fittings?
As long as the sealing surface of the JIC fittings is intact and the threads are not damaged, they can be reused.
How to identify JIC threads?
Identifying JIC threads essentially involves determining the thread type, pitch, and 37° cone sealing structure.
First, consider the appearance.
Thread → JIC is a UNF (Unified Fine Thread) straight thread with a fine pitch and a 60° pitch angle.
Sealing Surface → Both the internal and external joints have a 37° cone (metal-to-metal seal), which seals tightly when tightened.
No O-Ring → JIC does not rely on O-rings or gaskets, but relies on the cone for sealing.
Next, measure the thread diameter and pitch, and refer to the JIC size table to determine which threaded fitting it is.
