#20 X #12 MJIC UNION

Description & Features

Designed for demanding hydraulic applications, the #20 X #12 MJIC UNION is a durable connector that ensures reliable performance under high pressure. Crafted from straight steel, it supports a maximum dynamic pressure of up to 4,000 PSI, making it suitable for rigorous industrial environments. This union features male JIC SAE 37-degree flare threads on both ends, adhering to SAE J514 specifications for secure and leak-proof connections.

The union's dimensions include a B1 thread size of 1-5/8-12 and a B2 thread size of 1-1/16-12, providing versatility for various system configurations. Its compact overall length of 2.340 mm allows for easy integration without compromising on strength or functionality. Ideal for ensuring precise fluid transfer and minimizing downtime, this union is a critical component for maintaining system integrity.

SKU: 2403-20-12

Supplier Part Number (MPN): 2403-20-12

Specifications

Brand
BRENNAN
Connection Size 1
1-1/4 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
Cubic Inch Space L x W x H Dimensions
6.667 cu-in
Dimension Standards
SAE J514
Dimensions
2.34 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1.688 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
4000 psi
Series
2403 Series
Thread 2 Drill Dimensions
0.609 in
Thread B1 Drill Dimensions
1.078 in
Thread Size
1-5/8-12 x 1-1/16-12

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Model Number Connection Size 1 Connection Size 2 Material Construction Thread Size Hex Size Price Action
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3/8 in

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1/4 in

12L14/C1045 Steel

3/4-16 x 7/16-20

0.81 in

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5/16 in

12L14/C1045 Steel

1/2-20 x 3/4-16

0.81 in

08MJ-06MJ STRAIGHT

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1/2 in

3/8 in

12L14/C1045 Steel

3/4-16, 9/16-18

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1/2 in

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0.94 in

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5/8 in

3/8 in

12L14/C1045 Steel

7/8-14 x 9/16-18

0.94 in

10MJ-08MJ STRAIGHT

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12L14/C1045 Steel

7/8-14 x 3/4-16

0.94 in

10MJ-10MJ STRAIGHT

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5/8 in

12L14/C1045 Steel

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3/8 in

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2403-12-08

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1/2 in

12L14/C1045 Steel

3/4-16 x 1-1/16-12

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5/8 in

12L14/C1045 Steel

7/8-14 x 1-1/16-12

1-1/8 in

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2403-12-12

3/4 in

3/4 in

12L14/C1045 Steel

1-1/16-12

1-1/8 in

Steel Adapter, 1-3/16-12 Male JIC 37 deg Flare To 1-1/16-12 Male JIC 37 deg Flare, Straight

2403-14-12 Steel Male JIC To JIC Adapter

7/8 in

3/4 in

AISI 12L14/C1045 Steel

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#14 X #14 MJIC UNION

2403-14-14

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7/8 in

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#16 X #10 MJIC UNION

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#16 X #12 MJIC UNION

2403-16-12

1 in

3/4 in

12L14/C1045 Steel

1-5/16-12 x 1-1/16-12

1-3/8 in

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2403-16-16

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1 in

12L14/C1045 Steel

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1-3/8 in

#20 X #16 MJIC UNION

2403-20-16

1-1/4 in

1 in

12L14/C1045 Steel

1-5/8-12 x 1-5/16-12

1.688 in

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2403-20-20

1-1/4 in

1-1/4 in

12L14/C1045 Steel

1-5/8-12

1.688 in

#24 X #16 MJIC UNION

2403-24-16

1-1/2 in

1 in

12L14/C1045 Steel

1-7/8-12 x 1-5/16-12

2 in

24MJ-20MJ STRAIGHT

2403-24-20

1-1/2 in

1-1/4 in

12L14/C1045 Steel

1-7/8-12, 1-5/8-12

2 in

24MJ-24MJ STRAIGHT

2403-24-24

1-1/2 in

1-1/2 in

12L14/C1045 Steel

1-7/8-12

2 in

#32 X #24 MJIC UNION

2403-32-24

2 in

1-1/2 in

12L14/C1045 Steel

2-1/2-12 x 1-7/8-12

2-5/8 in

#32 X #32 MJIC UNION

2403-32-32

2 in

2 in

12L14/C1045 Steel

2-1/2-12

2-5/8 in

BRENNAN ADAPTER

2403-48-48

3 in

3 in

12L14/C1045 Steel

3-1/2-12

Product Questions & Answers (1)

Question by: Wayne A on Sep 26, 2025, 8:53 PM
What’s the max pressure this fitting can handle?
Answer by: Customer Support on Sep 28, 2025, 6:54 AM
This union is made to hold up to 4,000 PSI in dynamic pressure situations.

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