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#12 MJ X #20 MP ST.

Description & Features

The 12MJ-20MP Straight adapter is crafted from high-grade straight steel, designed for demanding industrial applications requiring reliable fluid conveyance. It features a Male JIC SAE 37 Degree Flare with a precise Thread B1 size of 1-1/16-12, adhering to SAE J514 specifications, ensuring secure and leak-proof connections.

On its opposite end, the adapter is equipped with a Male NPTF configuration, having a Thread B2 size of 1-1/4-11-1/2, built according to SAE J476 specifications. With an overall length of 2.360 mm, this robust component sustains a maximum dynamic pressure of 3,000 Psi.

This series 2404 connector measures 0.609 mm in Thread B1 drill and 1.250 mm in Thread B2 drill, indicating its adaptability to a wide range of industrial fluid systems. Manufactured by Brennan Industries Inc, it ensures durability and compliance with industry standards.

Supplier Part Number: 2404-12-20

California Residents: PROP-65 WARNING

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 2404-12-20	Product Weight 0.58 lbs

Product Questions & Answers (3)

Question by: Lance B on Aug 9, 2025, 9:16 AM

Will this here adapter work with standard JIC and NPTF fittings without any trouble?

Answer by: Customer Support on Aug 11, 2025, 7:28 AM

This adapter uses a Male JIC SAE 37 Degree Flare on one end and a Male NPTF on the other, both built to SAE standards, so it should work just fine with standard fittings that meet those specs.

Question by: Curt B on Jul 9, 2025, 2:08 PM

got a fitting on a hydraulic line running 2,800 psi and need to tie into a NPTF port on the manifold, this the right piece for that kind of hookup?

Answer by: Customer Support on Jul 11, 2025, 10:25 AM

For connecting a JIC 37-degree flare line to a Male NPTF port, this adapter handles exactly that transition. The JIC end runs a 1-1/16-12 thread per SAE J514, and the NPTF side is 1-1/4-11-1/2 per SAE J476. Rated to 3,000 psi dynamic pressure, so your 2,800 psi application stays within range.

Question by: Sherry K on Dec 29, 2025, 4:43 PM

trying to hook a #12 JIC hose end into a 1-1/4 NPTF port. is that what this adapter’s for?

Answer by: Customer Support on Dec 31, 2025, 7:13 AM

For connecting those two thread styles, it’s a straight adapter with a Male JIC 37 degree flare on one end and a Male NPTF on the other. The JIC side is 1-1/16-12 (SAE J514) and the NPTF side is 1-1/4-11-1/2 (SAE J476), so it matches the setup you described.