Midland Industries 6400610 Hydraulic Jic Orb Adapter Steel

Product Description

The MIDLAND INDUSTRIES 6400610 is a steel hydraulic adapter designed to connect a 3/8-inch Male JIC fitting to a 5/8-inch Male O-Ring Boss (ORB) port. It carries a 9/16-18 thread on the JIC end and a 7/8-14 thread on the ORB end. Rated to 3,600 psi working pressure and capable of operating up to 375 degrees F, this adapter is built for demanding hydraulic system environments. It is a non-adjustable fitting, converting from the JIC 37-degree flare seat to a straight-thread O-Ring Boss seal. Licensed plumbers, hydraulic technicians, and fluid power specialists install this type of adapter when transitioning between JIC and ORB porting configurations in steel hydraulic circuits.

The 6400610 is suited for use in industrial hydraulic systems, mobile equipment hydraulics, and fluid power circuits where a reliable JIC-to-ORB transition is required. It is part of the Midland 6400 Series, which covers MJIC to Male O-Ring Boss adapter configurations. This fitting is appropriate for steel-line hydraulic assemblies in both stationary and mobile applications where operating pressures remain within the 3,600 psi rated limit.

Key Features

• 3/8-inch Male JIC (9/16-18 thread) to 5/8-inch Male O-Ring Boss (7/8-14 thread) configuration
• 3,600 psi maximum working pressure rating
• Rated for operating temperatures up to 375 degrees F
• Non-adjustable ORB fitting for fixed-position sealing
• All-steel construction for durability in hydraulic service

Compatibility

Designed as an OEM-style hydraulic adapter for steel-line fluid power systems requiring a 3/8-inch Male JIC to 5/8-inch Male O-Ring Boss transition within the Midland 6400 Series fitting family.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit fully before removing or installing any fitting. Apply appropriate thread sealant or confirm the O-Ring Boss seal is in good condition before torquing. Follow applicable fluid power standards and equipment manufacturer torque guidelines for straight-thread ORB connections.