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#5 X #4 MJIC UNION

Description & Features

The Brennan Industries #5 X #4 MJIC Union is expertly engineered to meet the demanding requirements of industrial systems. This straight steel union provides a reliable connection with a maximum dynamic pressure rating of 6,000 psi, making it suitable for high-pressure applications.

Featuring a male JIC SAE 37-degree flare on both ends, the union is compliant with SAE J514 thread specifications. One end has a thread size of 1/2-20 while the other end features a 7/16-20 thread. The overall length of the union is 1.370 mm, ensuring precise fitment and robust performance in various settings.

Manufactured by Brennan Industries, this durable union belongs to the 2403 series. With a focus on quality and performance, it delivers consistent and reliable results in demanding environments.

Supplier Part Number: 2403-05-04

MPN: 2403-05-04

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 2403-05-04	Product Weight 0.05 lbs

Product Questions & Answers (3)

Question by: Howard T on Aug 25, 2025, 3:09 PM

what's the pressure rating on this union, and is it safe to run in a hydraulic line that sees regular pressure spikes?

Answer by: Customer Support on Aug 27, 2025, 11:19 AM

Rated at 6,000 psi maximum dynamic pressure, this fitting can hold up well in lines that see regular working load. Dynamic ratings already account for the kind of fluctuation you'd see in active hydraulic systems, so it's not just a static number. Both ends carry a male JIC SAE 37-degree flare, which is a proven sealing design in high-pressure hydraulic work. As long as your system stays within that 6,000 psi ceiling, you're in good shape with this one.

Question by: Rusty A on Oct 16, 2025, 11:26 AM

trying to swap a fitting out, are both ends on this union male JIC 37 degree flare?

Answer by: Customer Support on Oct 18, 2025, 10:04 AM

Both sides are male JIC SAE 37 degree flare, built to SAE J514 thread specs, so it is meant to join two female JIC flare ends in a straight union.

Question by: Jean H on Oct 25, 2025, 5:40 PM

Reckon this union will hold up in a hydraulic system pushing close to that 6,000 psi rating?

Answer by: Customer Support on Oct 26, 2025, 6:42 PM

Absolutely, this union is designed to handle dynamic pressures up to 6,000 psi, making it suitable for demanding hydraulic applications.