SAME DAY SHIPPING
— Order by 2pm EST.
Toggle Nav
Cart
Search
main product photo

#12 MJ X #20 MP ST.

Ask A Question

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
Connection Size 1
3/4 in
Connection Size 2
1-1/4 in
Connection Type
Male JIC, MNPT
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE 30 deg NPTF
Dimension Standards
SAE J514, SAE J476
Dimensions
2.36 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1.688 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
3000 psi
Series
2404 Series
Thread 2 Drill Dimensions
1.25 in
Thread B1 Drill Dimensions
0.609 in
Thread B2 Drill Dimensions
1.25 in
Thread Size
1-1/16-12 x 1-1/4-11-1/2

Similar Products

Model Number Connection Size 1 Connection Size 2 Thread Size Price Action
Steel Adapter, 1/8-27 Male NPT To 5/16-24 Male JIC 37 deg Flare, Straight

2404-02-02 Steel Male NPT To JIC Adapter

1/8 in

1/8 in

5/16-24 x 1/8-27

#2 MJ X #4 MP ST.

2404-02-04

1/8 in

1/4 in

1/4-18 x 5/16-24

03MJ-02MP STRAIGHT

2404-03-02

3/16 in

1/8 in

3/8-24 x 1/8-27

04MJ-01MP STRAIGHT

2404-04-01

1/4 in

7/16-20 x 1/16-27

04MJ-02MP STRAIGHT

2404-04-02

1/4 in

1/8 in

1/8-27, 7/16-20

04MJ-04MP STRAIGHT

2404-04-04

1/4 in

1/4 in

7/16-20, 1/4-18

04MJ-06MP STRAIGHT

2404-04-06

1/4 in

3/8 in

7/16-20 x 3/8-18

#4 MJ X #8 MP ST.

2404-04-08

1/4 in

1/2 in

7/16-20, 1/2-14

Steel Adapter, 3/4-14 Male NPT To 7/16-20 Male JIC 37 deg Flare, Straight

2404-04-12 Steel Male NPT To JIC Adapter

1/4 in

3/4 in

7/16-20 x 3/4-14

05MJ-02MP STRAIGHT

2404-05-02

5/16 in

1/8 in

1/2-20 x 1/8-27

05MJ-04MP STRAIGHT

2404-05-04

5/16 in

1/4 in

1/2-20 x 1/4-18

05MJ-06MP STRAIGHT

2404-05-06

5/16 in

3/8 in

1/2-20 x 3/8-18

05MJ-08MP STRAIGHT

2404-05-08

5/16 in

1/2 in

1/2-20 x 1/2-14

06MJ-02MP STRAIGHT

2404-06-02

3/8 in

1/8 in

9/16-18 x 1/8-27

06MJ-04MP STRAIGHT

2404-06-04

3/8 in

1/4 in

1/4-18 x 9/16-18

06MJ-06MP STRAIGHT

2404-06-06

3/8 in

3/8 in

3/8-18, 9/16-18

#6 MJ X #8 MP ST.

2404-06-08

3/8 in

1/2 in

1/2-14 x 9/16-18

06MJ-12MP STRAIGHT

2404-06-12

3/8 in

3/4 in

9/16-18, 3/4-14

#6 MJ X #16 MP ST.

2404-06-16

3/8 in

1 in

9/16-18 x 1-11-1/2

#8 MJ X #2 MP ST.

2404-08-02

1/2 in

1/8 in

3/4-16 x 1/8-27

08MJ-04MP STRAIGHT

2404-08-04

1/2 in

1/4 in

3/4-16, 1/4-18

08MJ-06MP STRAIGHT

2404-08-06

1/2 in

3/8 in

3/4-16 x 3/8-18

08MJ-08MP STRAIGHT

2404-08-08

1/2 in

1/2 in

3/4-16 x 1/2-14

08MJ-12MP STRAIGHT

2404-08-12

1/2 in

3/4 in

3/4-16 x 3/4-14

08MJ-16MP STRAIGHT

2404-08-16

1/2 in

1 in

3/4-16 x 1-11-1/2

#10 MJ X #4 MP ST.

2404-10-04

5/8 in

1/4 in

7/8-14 x 1/4-18

10MJ-06MP STRAIGHT

2404-10-06

5/8 in

3/8 in

7/8-14 x 3/8-18

10MJ-08MP STRAIGHT

2404-10-08

5/8 in

1/2 in

1/2-14 x 7/8-14

10MJ-12MP STRAIGHT

2404-10-12

5/8 in

3/4 in

3/4-14, 7/8-14

Steel Adapter, 1-11-1/2 Male NPT To 7/8-14 Male JIC 37 deg Flare, Straight

2404-10-16 Steel Male NPT To JIC Adapter

5/8 in

1 in

7/8-14 x 1-11-1/2

#10 MJ X #20 MP ST.

2404-10-20

5/8 in

1-1/4 in

7/8-14 x 1-1/4-11-1/2

#12 MJ X #6 MP ST.

2404-12-06

3/4 in

3/8 in

1-1/16-12 x 3/8-18

12MJ-08MP STRAIGHT

2404-12-08

3/4 in

1/2 in

1-1/16-12 x 1/2-14

12MJ-12MP STRAIGHT

2404-12-12

3/4 in

3/4 in

1-1/16-12 x 3/4-14

12MJ-16MP STRAIGHT

2404-12-16

3/4 in

1 in

1-1/16-12 x 1-11-1/2

#12 MJ X #24 MP ST.

2404-12-24

3/4 in

1-1/2 in

1-1/16-12, 1-1/2-11-1/2

AEROQUIP # 2021

2404-14-12

7/8 in

3/4 in

1-3/16-12 x 3/4-14

ADAPTER

2404-14-16

7/8 in

1 in

1-3/16-12 x 1-11-1/2

#16 MJ X #08 MP ST.

2404-16-08

1 in

1/2 in

1-5/16-12 x 1/2-14

16MJ-12MP STRAIGHT

2404-16-12

1 in

3/4 in

3/4-14, 1-5/16-12

16MJ-16MP STRAIGHT

2404-16-16

1 in

1 in

1-5/16-12 x 1-11-1/2 x 1-5/16-12

16MJ-20MP STRAIGHT

2404-16-20

1 in

1-1/4 in

1-5/16-12 x 1-1/4-11-1/2

#16 MJ X #24 MP ST.

2404-16-24

1 in

1-1/2 in

1-5/16-12 x 1-1/2-11-1/2

#16 MJ X #32 MP ST.

2404-16-32

1 in

2 in

1-5/16-12 x 2-11-1/2

Steel Adapter, 3/4-14 Male NPT To 1-5/8-12 Male JIC 37 deg Flare, Straight

2404-20-12 Steel Male NPT To JIC Adapter

1-1/4 in

3/4 in

1-5/8-12 x 3/4-14

20MJ-16MP STRAIGHT

2404-20-16

1-1/4 in

1 in

1-5/8-12 x 1-11-1/2

20MJ-20MP STRAIGHT

2404-20-20

1-1/4 in

1-1/4 in

1-1/4-11-1/2, 1-5/8-12

#20 MJ X #24 MP ST.

2404-20-24

1-1/4 in

1-1/2 in

1-5/8-12 x 1-1/2-11-1/2

20MJ-32MP STRAIGHT

2404-20-32

1-1/4 in

2 in

1-5/8-12 x 2-11-1/2

#24 MJ X #16 MP ST.

2404-24-16

1-1/2 in

1 in

1-7/8-12, 1-11-1/2

24MJ-20MP STRAIGHT

2404-24-20

1-1/2 in

1-1/4 in

1-1/4-11-1/2, 1-7/8-12

24MJ-24MP STRAIGHT

2404-24-24

1-1/2 in

1-1/2 in

1-7/8-12, 1-1/2-11-1/2

Steel Adapter, 2-11-1/2 Male NPT To 1-7/8-12 Male JIC 37 deg Flare, Straight

2404-24-32 Steel Male NPT To JIC Adapter

1-1/2 in

2 in

1-7/8-12 x 2-11-1/2

#32 MJ X #16 MP ST.

2404-32-16

2 in

1 in

2-1/2-12 x 1-11-1/2

#32 MJ X #20 MP ST.

2404-32-20

2 in

1-1/4 in

2-1/2-12 x 1-1/4-11-1/2

32MJ-24MP STRAIGHT

2404-32-24

2 in

1-1/2 in

2-1/2-12 x 1-1/2-11-1/2

32MJ-32MP STRAIGHT

2404-32-32

2 in

2 in

2-1/2-12 x 2-11-1/2

32MJ-40MP Straight

2404-32-40

2 in

2-1/2 in

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

#32 MJ X #48 MP ST.

2404-32-48

2 in

3 in

2-1/2-13 x 3-8

#40 MJ X #40 MP ST.

2404-40-40

2-1/2 in

2-1/2 in

3-12 x 2-1/2-8

#48 MJ X #48 MP ST.

2404-48-48

3 in

3 in

3-1/2-12 x 3-8

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.

Tell us what you need and we'll get back to you.

Fields marked * are required.