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12MJ-08MJ Straight Large Hex

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Description & Features

A steel straight fitting designed for reducing connections in hydraulic lines, the 12MJ-08MJ Straight Large Hex connects a 1-1/16-12 Male JIC SAE 37° Flare thread to a 3/4-16 Male JIC SAE 37° Flare thread. Both ends conform to SAE J514, making this fitting well-suited for use in hydraulic systems where JIC flare connections are standard.

Manufactured by Brennan Industries from straight steel, this fitting is rated to 5,000 PSI maximum dynamic pressure. The large hex body provides adequate wrench engagement for reliable installation in tight assemblies. California residents should note that this product is subject to a Proposition 65 warning per Brennan's labeling requirements.

SKU: 2403-LH-12-08

Supplier Part Number (MPN): 2403-LH-12-08

Specifications

Connection Size 1
3/4 in
Connection Size 2
1/2 in
Connection Type
Male JIC
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE 37 deg JIC Flare
Cubic Inch Space L x W x H Dimensions
3.687 cu-in
Dimension Standards
SAE J514
Dimensions
1.95 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-3/8 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
5000 psi
Series
2403-LH Series
Thread 2 Drill Dimensions
0.391 in
Thread B1 Drill Dimensions
0.609 in
Thread Size
3/4-16 x 1-1/16-12

Product Questions & Answers (1)

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Question by: Travis J on Dec 12, 2025, 7:37 PM
Will this fitting work alright for connecting different sized hydraulic lines?
Answer by: Customer Support on Dec 14, 2025, 6:11 PM
Yes it's designed to connect a 1-1/16-12 Male JIC SAE 37° Flare thread to a 3/4-16 Male JIC SAE 37° Flare thread, so it'll step down the size for ya.

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