Eaton 04Z-P04-BG Hydraulic Hose Orb Fitting 7/16-20

Product Description

The EATON 04Z-P04-BG is a male straight thread O-ring boss (ORB) hydraulic hose fitting designed for use in hydraulic systems requiring a leak-free, pressure-rated connection. Machined from steel, this fitting accepts a 4 mm hose size and uses a 7/16-20 thread with an ORB seal interface. The 9/16-inch hex allows for standard wrench installation. It is installed by hydraulic technicians, maintenance mechanics, and fluid power specialists during hose assembly, repair, or system fabrication.

This fitting is suited for hydraulic systems in industrial, agricultural, construction, and mobile equipment applications. The male straight thread ORB configuration makes it a common choice when connecting hydraulic hose to ports machined with straight thread O-ring seats, which are widely used in manifolds, pumps, valves, and cylinders. The steel construction supports use in high-pressure hydraulic circuits where durability and thread integrity are critical.

Key Features

• Male straight thread O-ring boss (ORB) design provides a reliable, leak-resistant seal at the port face
• Steel construction for strength and compatibility with common hydraulic fluids
• 7/16-20 thread size for precise fitment to matching ORB-ported components
• 4 mm hose size with a 7/16-inch hose diameter for correct hose-to-fitting match
• 9/16-inch hex allows use of standard open-end or combination wrenches during installation

Compatibility

Designed as an OEM-style replacement fitting for hydraulic hose assemblies requiring a 7/16-20 male straight thread O-ring boss connection on steel-ported hydraulic components.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. Inspect the O-ring seating surface on the mating port for damage before installation, and ensure the O-ring is properly seated and lubricated prior to threading. Follow applicable industry standards such as SAE J1926 for straight thread O-ring port torque and assembly procedures.