Parker 6-4 F5OLO-S Straight Thread Connector 7/16-20

Product Description

The PARKER 6-4 F5OLO-S is a compression tube straight thread connector designed for high-pressure hydraulic and fluid power lines. It joins a 3/8-inch outside diameter tube to a straight-thread port using an O-Ring Face Seal (ORFS) inlet and an SAE O-Ring Boss (SAE-ORB) outlet. Constructed from steel, this fitting is rated to 9200 psi maximum working pressure. The 7/16-20 UNF thread standard ensures consistent thread engagement in SAE-ORB ported components. At 1.34 inches overall length and 0.1 pounds, it is a compact, lightweight connector suited for tight hydraulic plumbing runs. Licensed plumbers, pipefitters, and hydraulic system technicians install this type of fitting in OEM and aftermarket fluid power assemblies.

This connector is used in hydraulic circuits, mobile equipment, and industrial fluid power systems where a tube line must terminate at a straight-thread boss port. The ORFS end provides a leak-resistant face-seal connection on the tube side, while the SAE-ORB end seals via an O-ring seated in a machined port. Typical applications include construction equipment, agricultural machinery, and industrial hydraulic manifolds where pressure integrity and vibration resistance are required. Installation is performed by hydraulic technicians and pipefitters working on high-pressure steel tube assemblies.

Key Features

• Rated to 9200 psi maximum working pressure for demanding hydraulic service
• ORFS x SAE-ORB end connections for reliable face-seal and O-ring boss port fitment
• 7/16-20 UNF straight thread for consistent engagement with SAE-ORB ports
• Accepts 3/8-inch outside diameter tube on the compression end
• Steel construction for durability in high-pressure fluid power environments
• Compact 1.34-inch overall length suits space-restricted plumbing layouts

Compatibility

Designed as an OEM-style replacement or new-installation fitting for hydraulic tube assemblies using 3/8-inch OD tubing terminated at 7/16-20 UNF SAE-ORB straight-thread boss ports in high-pressure fluid power systems.

Installation Notes

Installation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and bleed the hydraulic system completely before removing or installing any fittings. Inspect the O-ring sealing surfaces for damage before assembly and replace O-rings if worn or deformed. Do not over-tighten the SAE-ORB end, as over-torquing can damage the O-ring seat and cause leaks; follow the fitting manufacturer's torque guidelines for the port size.