DELPHI FITTINGS
Part Number: 302
37° JIC Short Flare Nut
Product Overview
The Delphi Fittings Part 302 is a 37° JIC Short Flare Nut. This female threaded nut is a key component in creating JIC flare connections with hydraulic tubing. It is designed with a shorter overall length compared to standard JIC nuts (like Part #304), which can be advantageous in space-constrained applications. The Part 302 nut is used in conjunction with a JIC tube sleeve (Part #319) and a 37° flared tube end to connect to a male JIC fitting. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, it meets SAE J514 specifications for reliable performance in hydraulic systems.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| Thread Type | Female JIC 37° Flare (UNF) (per SAE J514 / ISO 8434-2) |
| Design | Short pattern nut, offering a more compact profile than standard JIC nuts. |
| Body Style | Hexagonal nut for secure wrench tightening. |
| Compatibility | Specifically designed for use with a JIC Tube Sleeve (Delphi Part #319) and a correctly 37° flared tube. |
| Sealing Mechanism | Provides the necessary clamping force to press the flared tube (supported by the sleeve) against the 37° cone of a male JIC fitting, creating a robust metal-to-metal seal. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to corrosion. |
| Primary Function | To secure a flared tube and sleeve assembly to a male JIC 37° flare fitting, forming a leak-proof connection. |
| Working Pressure | Suitable for high-pressure hydraulic applications when correctly assembled with compatible tube, sleeve, and male fitting. Pressure ratings are dependent on tube size and material. |
Commonly Available Sizes (Part #302 Series)
Delphi Fittings offers the 37° JIC Short Flare Nut in a comprehensive range of sizes corresponding to standard hydraulic tube outer diameters (OD) and JIC/UNF thread specifications.
Examples include:
- 302-04: For 1/4" Tube OD (7/16-20 UNF Thread)
- 302-05: For 5/16" Tube OD (1/2-20 UNF Thread)
- 302-06: For 3/8" Tube OD (9/16-18 UNF Thread)
- 302-08: For 1/2" Tube OD (3/4-16 UNF Thread)
- 302-10: For 5/8" Tube OD (7/8-14 UNF Thread)
- 302-12: For 3/4" Tube OD (1-1/16-12 UNF Thread)
- 302-14: For 7/8" Tube OD (1-3/16-12 UNF Thread)
- 302-16: For 1" Tube OD (1-5/16-12 UNF Thread)
- 302-20: For 1-1/4" Tube OD (1-5/8-12 UNF Thread)
- 302-24: For 1-1/2" Tube OD (1-7/8-12 UNF Thread)
Note: It is crucial to always use this nut with the corresponding JIC tube sleeve (e.g., Delphi Part #319) for proper assembly and sealing. For unlisted sizes or specific requirements, please contact our sales team.
Applications
The Part 302 JIC Short Flare Nut is essential for:
- Creating reliable, high-pressure connections in hydraulic systems using flared metal tubing.
- Applications where space is at a premium and a shorter nut profile is advantageous for clearance or accessibility.
- Widely used in mobile equipment (construction, agriculture), industrial machinery, automotive systems, and general fluid power applications that utilize JIC flare tube connections.
- Assembly and repair of hydraulic lines where JIC standard fittings are employed.
Installation & Usage Guidelines
- Ensure the hydraulic tube end is accurately flared to a 37° angle using a quality flaring tool and is free from cracks, burrs, or imperfections.
- Slide the Part 302 JIC Short Flare Nut onto the tube with the threads facing the flared end.
- Slide the corresponding JIC Tube Sleeve (e.g., Part #319) onto the tube, ensuring the tapered end of the sleeve is oriented towards the flare.
- Align the flared tube end (now assembled with the nut and sleeve) squarely against the 37° cone of the mating male JIC fitting.
- Hand-tighten the nut onto the male fitting until snug.
- Use two wrenches for final tightening: one to hold the male fitting or adapter body stationary, and the other to turn the JIC Short Flare Nut. Tighten the nut to the manufacturer's recommended torque specification or by using the "Flats From Wrench Resistance" (FFWR) method appropriate for the tube size and material.
- Proper torque is critical to achieve a secure, leak-proof seal without over-tightening, which can damage the flare, nut, or male fitting.
Why Choose Delphi Fittings Part 302?
- Space-Saving Design: The shorter length is ideal for installations with limited clearance compared to standard JIC nuts.
- Reliable JIC Connection: Forms a dependable, high-integrity metal-to-metal seal when correctly assembled with a properly flared tube and JIC sleeve.
- High-Pressure Performance: Engineered to withstand the demanding pressures of hydraulic systems.
- Durable Material: Manufactured from high-grade carbon steel for excellent strength and mechanical properties.
- Corrosion Resistant: Standard zinc plating provides enhanced durability and protection against corrosion.
- Standard Compliance: Meets SAE J514 / ISO 8434-2 specifications for JIC flare fitting components, ensuring interchangeability.
- Quality Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part 302 - 37° JIC Short Flare Nut
For secure and compact JIC tube connections in space-sensitive hydraulic applications, the Part 302 Short Flare Nut is an essential, high-quality component. Contact Delphi Fittings today for wholesale pricing, bulk order details, and expert technical support.
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