Hydraulic Male Adaptor, 1/4"MJ X 3/8"MB

Hydraulic Male Adaptor, 1/4"MJ X 3/8"MB

The 6400X0406 Hydraulic Male Adapter is a straight hydraulic fitting designed to connect JIC flare connections to SAE O-ring boss (ORB) ports in high-pressure hydraulic systems. Featuring a JIC #4 (7/16"-20, 37° flare) male end and a SAE #6 (9/16"-18 ORB) male end, this adapter provides a reliable transition between two common hydraulic standards. Constructed from durable carbon steel and rated for up to 5000 PSI, it’s built to handle demanding hydraulic applications where strength and leak-free performance are essential—because in hydraulics, the only thing that should be moving is the fluid inside the hose.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 6400X0406
• Product Type: Hydraulic male adapter fitting
• Fitting Shape: Straight
• End 1 Type: Male JIC
• End 1 Size: JIC #4 (7/16"-20, 37° flare)
• End 2 Type: Male SAE ORB
• End 2 Size: SAE #6 (9/16"-18 ORB)
• Material: Carbon steel
• Working Pressure: Up to 5000 PSI
• Function: Connects JIC flare hydraulic lines to SAE ORB ports

Ideal For

• Hydraulic system installation and repair
• Connecting JIC hose fittings to SAE ORB ports
• Agricultural, industrial, and heavy equipment hydraulic systems
• High-pressure fluid transfer applications
• Anyone who knows that a properly matched hydraulic fitting keeps the oil flowing where it should—and nowhere else