Parker 2 HP5ON-S Hex Socket Plug 5/16-24 Male Thread

Product Description

The PARKER 2 HP5ON-S is a hex socket plug designed for hydraulic and industrial fluid system applications. It accepts a 5/16-24 male straight thread with an O-ring seal, providing a leak-resistant closure point rated to 6,000 psi maximum working pressure. The plug is constructed from zinc-plated steel for corrosion resistance in demanding service environments. With an overall length of 3/8 inches and a 1/8-inch hex drive size, it installs cleanly into tight spaces. Hydraulic technicians, maintenance mechanics, and plumbing professionals use this plug to cap off ports, block unused fittings, or temporarily isolate system lines during service.

This plug is suited for use in hydraulic power units, industrial machinery, and fluid transfer systems where a male straight thread O-ring port closure is required. The 5/16-24 UN/UNF-2A thread standard makes it compatible with SAE straight thread O-ring boss ports meeting SAE 090109B requirements. It is appropriate for both new installations and replacement applications in high-pressure industrial settings where maintaining a secure, leak-free port seal is critical to system integrity.

Key Features

• Rated to 6,000 psi maximum working pressure for high-pressure hydraulic service
• Male straight thread O-ring connection type for reliable, leak-resistant sealing
• 5/16-24 UN/UNF-2A thread standard per SAE 090109B
• Zinc-plated steel construction for corrosion resistance
• Compact profile: 3/8 inches overall length with 1/8-inch hex drive
• Hex socket drive allows installation with standard hex keys in confined spaces

Compatibility

Designed for use with SAE straight thread O-ring boss ports conforming to SAE 090109B where a 5/16-24 male plug fitting is specified.

Installation Notes

Installation should be performed by a qualified hydraulic or mechanical technician. Before installing or removing any port plug, depressurize the system completely and relieve any stored hydraulic pressure to prevent injury. Use a calibrated hex key sized for the 1/8-inch socket drive and tighten to the port manufacturer's recommended torque for this thread size. Inspect the O-ring for nicks or damage before assembly, and verify the mating port surface is clean and free of burrs to ensure a proper seal.