12MJ-12MJ STRAIGHT

Description & Features

The 12MJ-12MJ Straight adapter by Brennan Industries Inc is designed for applications demanding a maximum dynamic pressure of 5,000 PSI. Its raw material composition is straight steel, contributing to its durability and performance. Measuring at an overall length of 2.160 mm, this adapter ensures precise and reliable connections in various industrial settings.

This adapter features male JIC SAE 37 degree flare threads on both ends, conforming to SAE J514 specifications. Both ends have a thread size of 1-1/16-12, and a thread drill diameter of 0.609 mm, ensuring compatibility and secure fitment in your assemblies.

The 2403 series designation ensures consistent quality standards, offering reliability for critical industrial tasks. As with all products, California residents should be aware of Proposition 65 warnings associated with this item.

Supplier Part Number: 2403-12-12

Specifications

Connection Size 1
3/4 in
Connection Size 2
3/4 in
Connection Type
Male JIC
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE 37 deg JIC Flare
Dimension Standards
SAE J514
Dimensions
2.16 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-1/8 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
5000 psi
Series
2403 Series
Thread 2 Drill Dimensions
0.609 in
Thread B1 Drill Dimensions
0.609 in
Thread Size
1-1/16-12

Product Questions & Answers (1)

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Question by: Hugh W on Jan 21, 2026, 6:25 AM
trying to replace an old straight JIC coupler, are both ends on this one 12MJ?
Answer by: Customer Support on Jan 22, 2026, 4:28 PM
Both ends are male JIC SAE 37 degree flare threads, size 1-1/16-12, built to SAE J514. It is a straight 12MJ to 12MJ adapter.

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