Part Number: 2403LH

37° JIC SAE Flare Male Tube Large Hex Union

Product Overview

The Delphi Fittings Part 2403LH is a 37° JIC SAE Flare Male Tube Union featuring a larger hexagonal body compared to the standard 2403 union. This design enhancement provides easier wrench access and allows for higher torque applications during installation and removal. Like the standard version, it is designed to create a secure, in-line connection between two flared tubes or two female JIC swivel fittings of the same size, with male JIC 37° flare ends on both sides. The JIC (Joint Industry Council) connection ensures a reliable metal-to-metal seal on the 37-degree flare cone. Manufactured from high-quality carbon steel and zinc-plated for robust corrosion resistance, the Part 2403LH is an excellent choice for demanding high-pressure hydraulic systems where improved tool engagement is beneficial.

Key Features & Specifications

Material	High-Grade Carbon Steel
End 1 Configuration	Male 37° JIC Flare (per SAE J514 / ISO 8434-2)
End 2 Configuration	Male 37° JIC Flare (per SAE J514 / ISO 8434-2)
Body Style	Straight Union with Large Hex Body for enhanced wrench grip.
Sealing Mechanism	Metal-to-metal seal on the 37° flare cone with mating female JIC swivel nuts or flared tube ends.
Corrosion Protection	Standard Zinc Plating for enhanced durability.
Primary Function	To connect two female JIC swivel fittings or flared tubes of the same size in a straight line, with improved wrench access.
Working Pressure	Suitable for high-pressure hydraulic applications. Specific ratings vary by size.

Commonly Available Sizes (Part #2403LH Series)

Delphi Fittings offers the 37° JIC SAE Flare Male Tube Large Hex Union in a comprehensive range of common JIC sizes. These unions feature the same JIC male thread size on both ends and a larger hex body.

Examples include (Male JIC x Male JIC, Large Hex):

2403LH-04: 1/4" (7/16-20) JIC Male x 1/4" (7/16-20) JIC Male
2403LH-06: 3/8" (9/16-18) JIC Male x 3/8" (9/16-18) JIC Male
2403LH-08: 1/2" (3/4-16) JIC Male x 1/2" (3/4-16) JIC Male
2403LH-10: 5/8" (7/8-14) JIC Male x 5/8" (7/8-14) JIC Male
2403LH-12: 3/4" (1-1/16-12) JIC Male x 3/4" (1-1/16-12) JIC Male
2403LH-16: 1" (1-5/16-12) JIC Male x 1" (1-5/16-12) JIC Male

Note: JIC sizes are often denoted by dash numbers or their UNF thread size. For specific dimensions of the large hex or unlisted sizes, please contact our sales team. The standard hex version is Part #2403.

Applications

The Part 2403LH JIC Male Large Hex Union is particularly useful for:

Applications requiring higher assembly torque or where frequent assembly/disassembly necessitates robust tool engagement.
Installations in confined spaces where improved wrench access provided by a larger hex can simplify the process.
Joining two hydraulic hoses equipped with female JIC swivel nuts where a secure, high-torque connection is desired.
Connecting two sections of flared tubing in demanding environments.
Mobile equipment, heavy machinery, and industrial hydraulic systems where durability and ease of maintenance are key.

Installation & Usage Guidelines

Ensure both male JIC flare ends of the union and the mating female JIC seats are clean, undamaged, and free of any contaminants.
Align the union with the mating female JIC fittings.
Thread the female JIC swivel nuts onto the male JIC flare ends of the union by hand until finger tight. Ensure the 37° flare surfaces are correctly aligned.
Utilize the larger hex body with an appropriately sized wrench for a secure grip. Use a second wrench on the mating swivel nut. Tighten each JIC swivel nut to the recommended torque. The larger hex provides better leverage and stability.
No thread sealant is required for JIC flare connections.

Why Choose Delphi Fittings Part 2403LH?

Enhanced Wrench Access: The larger hex body allows for easier and more secure tool engagement, especially in tight spots or when higher torque is needed.
Reliable JIC Connection: Provides the proven metal-to-metal seal of the 37° flare design.
High-Pressure Capability: Suitable for demanding hydraulic applications.
Excellent Reusability: Can be disconnected and reconnected multiple times without compromising seal integrity, assuming sealing surfaces remain undamaged.
Durable Construction: Manufactured from high-grade carbon steel for strength and longevity.
Standard Compliance: Meets SAE J514 / ISO 8434-2 standards for compatibility and performance.
Quality Manufacturing: Produced under Delphi Fittings' ISO 9001:2015 certified quality management system.

Get a Quote for Part 2403LH - 37° JIC SAE Flare Male Tube Large Hex Union

For straight JIC connections requiring enhanced tool engagement, the Part 2403LH Large Hex Union is an excellent choice. Contact Delphi Fittings for wholesale pricing, bulk order information, and expert assistance with your hydraulic fitting needs.

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