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A FJX-04-04 | 1/4" hose x 1/4" JIC 37° female swivel is a type of hydraulic fitting that consists of two parts: a hose fitting with a 1/4" inside diameter and a JIC 37° female swivel fitting with a 1/4" tube size and a nominal thread size of 7/16"-20. The JIC 37° female swivel fitting has a cone-shaped seat that mates with a 37° flare on the male fitting, providing a reliable seal in high-pressure hydraulic applications.
Interchanges with Weatherhead 04U-604
Questions & Answers

Popular Questions
10 months ago
10 months ago
A number 8 hydraulic hose has an internal diameter of 1/2 inch. The "number 8" designation typically refers to the dash size, which is a standard measure in the hydraulic industry where each dash size. See full answer »
9 months ago
9 months ago
To identify hydraulic fitting size, measure the outer diameter of the male threads or the inner diameter of the female threads using calipers. Then, refer to a thread identification chart to match the measurements with the correct fitting size and thread type. See full answer »
9 months ago
9 months ago
Hydraulic hose is typically measured by its Inner Diameter (ID). This measurement is important because it determines the flow velocity of the hydraulic fluid within the hose. Source: 1. "Hydraulic Hose 101: Fast Facts" - https://www.parker.com/literature/Hos.... (See under "Hose Size Selection Nomograph" section) 2. "Hydraulic hose sizing" - https://www.pirtekusa.com/technical-i... (See under "Hose Bore size" section). See full answer »
9 months ago
9 months ago
The numbers on hydraulic hoses typically indicate the hose's diameter, pressure rating, and compliance with specific industry standards. For example, a number like "1/2-12" might denote a 1/2-inch diameter hose with a 12,000 PSI pressure rating. These markings help ensure the hose is suitable for its intended application. See full answer »
9 months ago
9 months ago
The Joint Industrial Council (JIC) introduced JIC fittings. They were originally designed and implemented by the U.S. Army during World War II, for quick and reliable field assembly, disassembly, and repair of military equipment. Referenced URLs: 1. https://www.air-way.com/jic-fittings-... The information can be found in the first two paragraphs under the heading "What are JIC fittings?" 2. https://www.hoseassemblytips.com/what... The information is in the first paragraph under the heading "What is a JIC fitting?" See full answer »
9 months ago
9 months ago
The ID of a hydraulic hose refers to its "inside diameter." It is a critical measurement that indicates the size of the pipe. This measurement directly correlates to the rate of fluid flow within the hose, the pressure it can withstand, and its fitting compatibility. Reference: 1. "Hydraulic Hose 101: Fast Facts" (https://www.hoseassemblytips.com/hydr...). You can see this information in the section titled "Size." 2. "How to Identify Fluid Ports and Connectors" (https://www.hydraulicsdirect.com/Flui...). The information can be found in the paragraph under the subheading "How to Measure Threads." See full answer »
9 months ago
9 months ago
The ID of a hydraulic hose refers to its "inside diameter." It is a critical measurement that indicates the size of the pipe. This measurement directly correlates to the rate of fluid flow within the hose, the pressure it can withstand, and its fitting compatibility. Reference: 1. "Hydraulic Hose 101: Fast Facts" (https://www.hoseassemblytips.com/hydr...). You can see this information in the section titled "Size." 2. "How to Identify Fluid Ports and Connectors" (https://www.hydraulicsdirect.com/Flui...). The information can be found in the paragraph under the subheading "How to Measure Threads." See full answer »
9 months ago
9 months ago
The ID of a hydraulic hose refers to its "inside diameter." It is a critical measurement that indicates the size of the pipe. This measurement directly correlates to the rate of fluid flow within the hose, the pressure it can withstand, and its fitting compatibility. Reference: 1. "Hydraulic Hose 101: Fast Facts" (https://www.hoseassemblytips.com/hydr...). You can see this information in the section titled "Size." 2. "How to Identify Fluid Ports and Connectors" (https://www.hydraulicsdirect.com/Flui...). The information can be found in the paragraph under the subheading "How to Measure Threads." See full answer »

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About JIC Fittings
Braided Hose Fittings / JIC 37° Flare / SAE J514
Originally named for the now-defunct Joint Industrial Commission (JIC), this connection is very common in fluid power systems. Both the male and female halves of this connection have 37° seats. The seal takes place by establishing a line of contact between the male flare and the female cone seat. The threads hold the connection mechanically.
See the JIC Thread Chart Below
