5404-04-04 | Hydraulic Fitting 1 4" Male NPT x 1 4" Male NPT

Description:

The 5404-04-04 Hydraulic Fitting is used in hydraulic fluid power systems to provide a straight threaded connection between components with matching pipe thread sizes while maintaining a secure, leak-resistant seal. Commonly installed in hydraulic power units, industrial machinery, mobile equipment, and fluid transfer systems requiring a 1/4 in Male NPT to 1/4 in Male NPT adapter connection. Maintenance teams and hydraulic technicians use this fitting for system repairs, plumbing modifications, and replacement of worn or damaged hydraulic connections.

Applications:

The 5404-04-04 hydraulic fitting is designed for connecting hydraulic lines, valves, gauges, pumps, cylinders, manifolds, and piping assemblies in fluid power systems. It is commonly used in industrial machinery, construction equipment, agricultural equipment, manufacturing facilities, and hydraulic test systems where reliable threaded connections are required. The straight adapter design provides unrestricted fluid flow while simplifying installation, maintenance, and system modifications.

Technical Specifications:

• Manufacturer Part Number (MPN): 5404-04-04
• Product Type: Hydraulic Adapter Fitting
• Configuration: Straight Adapter
• End Connection 1: 1/4 in Male NPT
• End Connection 2: 1/4 in Male NPT
• Thread Type: NPT (National Pipe Thread)
• Function: Hydraulic Line Connection
• Flow Path: Straight Through
• Application: Hydraulic Fluid Transfer Systems
• Material: Steel (typical)
• Mounting Type: Threaded Installation
• Compatible Media: Hydraulic Oil and Industrial Fluids
• Industry Applications: Construction, Agriculture, Manufacturing, Fluid Power Systems
• Operating Environment: Industrial and Mobile Hydraulic Equipment
• Connection Style: Male NPT × Male NPT

Common Replacements:

• Parker Male NPT Adapter
• Brennan Male NPT Hydraulic Adapter
• Weatherhead Straight NPT Adapter