Hydraulic Adapter, 1/4"FS X 1/4"MB

Hydraulic Adapter, 1/4"FS X 1/4"MB

The FS6400X0404 Hydraulic Adapter (1/4" FS × 1/4" MB) is a straight hydraulic fitting designed to connect ORFS (O-Ring Face Seal) systems to SAE O-Ring Boss ports. Built from durable carbon steel and rated for working pressures up to 5000 PSI, it provides a reliable, leak-resistant connection in high-pressure hydraulic systems. The male ORFS end ensures a secure seal with an O-ring face, while the male SAE ORB end threads into compatible hydraulic ports, making it ideal for machinery, agricultural equipment, and hydraulic service applications. In short, it’s a compact adapter that helps different hydraulic thread styles cooperate—because hydraulic systems run a lot better when every connection agrees with the next one.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: FS6400X0404
• Product Type: Hydraulic adapter fitting
• Fitting Shape: Straight
• End 1 Type: Male ORFS (O-Ring Face Seal)
• End 1 Size: ORFS 4 (9/16"-18)
• End 2 Type: Male SAE O-Ring Boss (ORB)
• End 2 Size: SAE 4 (7/16"-20)
• Working Pressure: Up to 5000 PSI
• Material: Carbon steel
• Seal Type: O-ring sealing surfaces for leak-resistant connections
• Application: Hydraulic systems, agricultural equipment, and industrial machinery

Ideal For

• Connecting ORFS hoses to SAE ORB hydraulic ports
• Hydraulic repairs and system modifications
• Agricultural, construction, and industrial hydraulic equipment
• High-pressure hydraulic systems requiring reliable sealing
• Technicians who know that in hydraulics, a good adapter can be the difference between smooth operation and a very oily problem.