Hydraulic Adaptor, 1/4"FB X 1/4"MP

Hydraulic Adaptor, 1/4"FB X 1/4"MP

The 6404X0404 Hydraulic Adapter is a straight hydraulic fitting designed to connect SAE O-ring boss (ORB) female ports to male NPT threaded connections in high-pressure hydraulic systems. Featuring a SAE #4 (7/16"-20 ORB) female end and a 1/4" male NPT connection, this adapter provides a secure, leak-resistant transition between different hydraulic thread standards. Built from durable carbon steel and rated for up to 5000 PSI, it’s designed to perform reliably in demanding hydraulic environments—because when fluid systems are under pressure, the fittings need to be just as tough.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 6404X0404
• Product Type: Hydraulic adapter fitting
• Fitting Shape: Straight
• End 1 Type: Female SAE ORB
• End 1 Size: SAE #4 (7/16"-20 ORB)
• End 2 Type: Male NPT
• End 2 Size: 1/4 in NPT (1/4"-18 tapered)
• Material: Carbon steel
• Working Pressure: Up to 5000 PSI
• Function: Connects SAE ORB ports to NPT threaded hydraulic lines

Ideal For

• Hydraulic system installations and repairs requiring thread-type conversion
• Connecting SAE ORB ports to NPT hydraulic lines
• Agricultural, industrial, and heavy equipment hydraulic systems
• High-pressure fluid transfer applications
• Anyone who knows that a strong hydraulic fitting keeps the oil moving through the system instead of decorating the shop floor