37° Flare (JIC) Fittings
37° Flare (JIC) Male Connector
37° flare (JIC) male connector for joining flared tubing to a male threaded port connection. Available with NPT and SAE straight-thread configurations for hydraulic and industrial fluid systems.
Specifications
- Series
- JMC Series
- Connection
- 37° Flare Tube × Male Thread
- Flare Angle
- 37°
- Tube O.D.
- 1/8 to 2 in.; metric tube O.D. options available by configuration
- Male-End Options
- NPT & SAE Straight Thread
- Standard Basis
- SAE J514 / ISO 8434-2
- Standard Material
- 316 Stainless Steel
Overview
The JMC Series 37° Flare Male Connector provides a straight transition between a 37° flared tube connection and a male threaded port connection.
On the flare side, tightening the nut clamps the flared tube against the 37° fitting seat, creating a metal-to-metal sealing interface. The threaded end connects the assembly to the corresponding female port.
NPT and SAE straight-thread configurations are available for different hydraulic and industrial connection requirements. Tube O.D., thread type and thread size should be selected according to the mating tube and port.
Key Features
- Straight tube-to-port connection
- 37° flare metal-to-metal tube sealing interface
- NPT and SAE straight-thread male-end configurations
- Fractional and metric tube O.D. options
- Wide range of tube and thread-size combinations
- 316 stainless steel as the standard material
- Based on the SAE J514 / ISO 8434-2 37° flare fitting system
Engineering Specifications
Parameter | Specification |
|---|---|
Fitting Type | Male Connector |
Tube Connection | 37° Flared Tube |
Port Connection | Male Thread |
Flare Angle | 37° |
Male-Thread Configurations | NPT & SAE Straight Thread |
Tube O.D. Range | 1/8 to 2 in.; metric options depending on configuration |
Standard Basis | SAE J514 / ISO 8434-2 |
Standard Material | 316 Stainless Steel |
Connection & Size Options
JMC Series Male Connectors are available in multiple tube O.D. and male-thread combinations.
For 37° flare tube connections, the flare size and corresponding straight thread are selected according to the tube O.D. Common fractional configurations include:
Tube O.D. | 37° Flare Thread |
|---|---|
1/8 in. | 5/16-24 |
3/16 in. | 3/8-24 |
1/4 in. | 7/16-20 |
5/16 in. | 1/2-20 |
3/8 in. | 9/16-18 |
1/2 in. | 3/4-16 |
5/8 in. | 7/8-14 |
3/4 in. | 1 1/16-12 |
7/8 in. | 1 3/16-12 |
1 in. | 1 5/16-12 |
1 1/4 in. | 1 5/8-12 |
1 1/2 in. | 1 7/8-12 |
2 in. | 2 1/2-12 |
NPT male-thread configurations are also available in multiple tube-to-port size combinations. Available combinations vary by configuration.
Sealing Principle
The 37° flare connection seals at the mating metal surfaces between the fitting seat and the inside surface of the flared tube.
The straight thread on the flare connection provides the mechanical clamping force required to hold these surfaces together; it is not the primary sealing surface.
For reliable assembly, the tube flare and fitting seat should be clean and free from scratches, cracks or other surface damage that could affect the sealing interface.
Working Pressure
Working pressure depends on fitting size, tube material, tube wall thickness, operating temperature and the complete connection configuration.
Representative working pressures for the 37° flare fitting system are:
Tube O.D. / SAE Size | Working Pressure |
|---|---|
1/8 to 3/8 in. / -2 to -6 | Up to 5000 psi / 345 bar |
1/2 in. / -8 | Up to 4500 psi / 310 bar |
5/8 to 3/4 in. / -10 to -12 | Up to 3500 psi / 241 bar |
7/8 to 1 in. / -14 to -16 | Up to 3000 psi / 207 bar |
1 1/4 in. / -20 | Up to 2500 psi / 172 bar |
1 1/2 in. / -24 | Up to 2000 psi / 138 bar |
2 in. / -32 | Up to 1500 psi / 103 bar |
Pressure capability of the complete assembly is limited by the lowest-rated component and should be confirmed for the selected tube, fitting and port configuration.
Material
Standard Material: 316 Stainless Steel
316 stainless steel is used for corrosion resistance and mechanical performance in hydraulic and industrial fluid systems.
Material requirements should be specified with the application, medium and operating conditions when requesting a quotation.
Typical Applications
37° Flare (JIC) Male Connectors are commonly used in:
- Hydraulic power units
- Industrial machinery
- Mobile hydraulic equipment
- Machine tools
- Pumps and hydraulic control systems
- Test equipment
- Process and utility equipment
- Hydraulic tube installations requiring a straight tube-to-port transition
Selection & Ordering Information
To specify the required 37° Flare (JIC) Male Connector, provide:
- Tube O.D.
- Male-thread type — NPT or SAE straight thread
- Male-thread size
- Material
- Tube material and wall thickness
- Operating pressure and temperature
- Fluid or process medium
- Quantity
Existing part numbers, drawings, BOMs, thread specifications or product references can also be provided for product matching and quotation review.
