Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 1/2-20 Male 42 deg Inverted Flare, Straight

Description & Features

The Eaton Aeroquip Steel Brake System Adapter is an essential component engineered for precision and reliability in hydraulic brake systems. This straight adapter features a -04 Male JIC 37-degree flare to a 1/2-20 Male 42-degree inverted flare connection, making it suitable for various industrial applications requiring secure and leak-free connections. Constructed from high-quality steel, this adapter ensures durability and optimal performance under demanding conditions. The JIC flare design offers a robust seal, preventing fluid leaks and maintaining system integrity.

Ideal for use in hydraulic systems where reliable performance is critical, this adapter's compact and straightforward design facilitates easy integration into existing setups. Its compatibility with Eaton Aeroquip's extensive range of hydraulic components ensures seamless integration into your hydraulic systems, providing you with the reliability and peace of mind that comes with using industry-leading products.

SKU: FBM2931

Supplier Part Number (MPN): FBM2931

Alternate Part Numbers: C1EB64

Specifications

Adjustable End
No
Brand
Danfoss Power Solution (Aeroquip High Performance)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
Fitting Dash Size
-04
Length
1.16
Supplier Part Number
FBM2931
Thread 2
1/2-20
Alternate Part Numbers
Alternate Part Number C1EB64, Alternate Part Number MINO-00015X26462
Product Weight
8.57 lbs

Similar Products

Model Number Fitting Dash Size Thread 2 Length Price Action
Steel Brake System Adapter, -03 Male JIC 37 deg Flare To 3/8-24 Male 42 deg Inverted Flare, Straight

FBM2926 Steel Male JIC To 42 Inv Adapter

-03

3/8-24

1.07

Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 3/8-24 Male 42 deg Inverted Flare, Straight

FBM2927 Steel Male JIC To 42 Inv Adapter

-04

3/8-24

1.14

Steel Brake System Adapter, -03 Male JIC 37 deg Flare To 7/16-24 Male 42 deg Inverted Flare, Straight

FBM2929 Steel Male JIC To 42 Inv Adapter

-03

7/16-24

1.14

Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 7/16-24 Male 42 deg Inverted Flare, Straight

FBM2930 Steel Male JIC To 42 Inv Adapter

-04

7/16-24

1.14

Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 1/2-20 Male 42 deg Inverted Flare, Straight

FBM2931 Steel Male JIC To 42 Inv Adapter

-04

1/2-20

1.16

Product Questions & Answers (1)

Question by: Wayne G on Dec 8, 2025, 10:45 AM
Got a brake line on an older piece of equipment running a 1/2-20 inverted flare fitting, but the other end needs to hook up to a JIC -04 line. This the right adapter for that?
Answer by: Customer Support on Dec 10, 2025, 6:32 AM
That's exactly what this adapter is built for. One end is a -04 Male JIC 37-degree flare, and the other is a 1/2-20 Male 42-degree inverted flare, straight configuration. If your brake line has a female inverted flare port and your JIC hose side has a female -04 seat, this bridges those two without any modification. It's a Eaton Aeroquip part, SKU FBM2931, also cross-referenced as C1EB64 if you're matching it against a parts list.