Hydraulic Fitting, 12 MJICX 12 ORB, 6400-12-12-O

The 6400-12-12-O Hydraulic Adapter is a heavy-duty straight fitting designed to connect 3/4" Male JIC (37° flare) to 3/4" Male O-Ring Boss (ORB) ports in hydraulic systems. Built from durable carbon steel with corrosion-resistant plating, this adapter provides a secure, leak-free connection in high-pressure applications.

Engineered to meet SAE J514 standards, this fitting delivers reliable sealing performance using a metal-to-metal JIC flare connection on one end and an O-ring face seal on the other. The straight configuration allows for efficient inline routing in hydraulic circuits.

With a working pressure rating up to 5,000 PSI, the 6400-12-12-O is ideal for demanding environments such as construction equipment, water trucks, and industrial hydraulic systems.

Key Features

• 3/4" Male JIC (37° flare) x 3/4" Male ORB connection
• Straight adapter for inline hydraulic connections
• Carbon steel construction with corrosion-resistant plating
• O-ring seal for leak-free ORB connection
• Rated up to 5,000 PSI working pressure
• Meets SAE J514 standards
• Interchangeable with major hydraulic fitting brands

Specifications

• Size: -12 (3/4") x -12 (3/4")
• Thread: 1-1/16"-12 (both ends)
• End Types: Male JIC 37° x Male ORB
• Configuration: Straight
• Material: Steel
• Length: ~1.97"
• Hex Size: 1-1/4"
  

Applications

• Hydraulic hose assemblies
• Water truck hydraulic systems
• Construction and heavy equipment
• Agricultural and industrial machinery