Parker 5 HP5ON-S Hex Socket Plug 1/2-20 Unf 6000 Psi

Product Description

The PARKER 5 HP5ON-S is a hex socket plug designed to seal and terminate hydraulic or industrial fluid lines. It uses a male straight thread O-ring connection, which provides a leak-resistant mechanical seal at the fitting face rather than relying on thread deformation alone. Rated to a maximum working pressure of 6000 psi, this plug is built for high-pressure hydraulic systems found in industrial machinery, mobile equipment, and fluid power circuits. The compact hex socket drive allows installation and removal in tight-clearance locations using a hex key. It ships as a single-piece unit and conforms to SAE standard 090109B.

This plug is suited for hydraulic and industrial plumbing applications where a reliable, pressure-rated port closure is required. The 1/2-20 UNF-2A male thread and straight thread O-ring face seal design make it appropriate for use in manifolds, valve bodies, pump ports, and cylinder housings operating at high working pressures. It is typically installed and serviced by hydraulic system technicians, fluid power mechanics, and industrial maintenance professionals working on stationary or mobile hydraulic equipment.

Key Features

• 6000 psi maximum working pressure rating for high-pressure hydraulic circuits
• Male straight thread O-ring face seal connection for reliable, leak-resistant port closure
• 1/2-20 UNF-2A male thread conforms to SAE 090109B standard
• 7/32 inch hex socket drive allows installation in confined spaces with a hex key
• Compact overall length of 15/32 inches suits tight-clearance port locations
• Lightweight at 0.02 pounds, suitable for weight-sensitive assemblies

Compatibility

Designed as an OEM-style replacement or service plug for industrial and hydraulic fluid power systems requiring a 1/2-20 male straight thread O-ring hex socket plug rated to 6000 psi.

Installation Notes

Installation is typically performed by a qualified hydraulic technician or fluid power mechanic. Before installing or removing any plug, depressurize the hydraulic system completely and ensure the reservoir is isolated to prevent fluid release. Use the correct hex key size to avoid stripping the socket drive. Verify that the O-ring is properly seated and undamaged before torquing the plug to the port; a missing or pinched O-ring will compromise the pressure seal.