Parker 6FSC4N-B Compression Tube Connector Brass 2300 Psi

Product Description

The PARKER 6FSC4N-B is a brass compression tube connector designed to join 3/8-inch outside diameter tubing to a 1/4-18 female NPT threaded port. It provides a secure, leak-resistant connection rated to 2300 psi working pressure, making it suitable for demanding fluid and gas line applications. The fitting features a compression end on the tube side and a female NPT thread on the opposite end, allowing direct inline connection between tubing runs and threaded fittings or equipment ports. Its overall length of 1.48 inches makes it compact enough for tight installations. Plumbers, HVAC technicians, and instrumentation mechanics are the typical installers of this fitting type.

This compression connector is used in residential and commercial plumbing, HVAC refrigerant and instrument lines, pneumatic control systems, and hydraulic tubing assemblies where a reliable tube-to-pipe-thread transition is required. The brass construction makes it compatible with a wide range of media including water, air, oil, and many industrial fluids. It is well suited for panel-mounted equipment connections, OEM machine assemblies, and field service repairs where a compact inline connector is needed to transition between compression tubing and NPT-ported components.

Key Features

• Brass construction for corrosion resistance and durability across a broad range of media
• Rated to 2300 psi maximum working pressure for demanding service environments
• Compression x FNPT end connections allow tube-to-pipe-thread inline transitions
• Accepts 3/8-inch outside diameter tubing on the compression end
• 1/4-18 female NPT thread on the pipe end conforms to standard FPT thread specification
• Compact 1.48-inch overall length suits confined installation spaces

Compatibility

Designed as an OEM-style inline connector for 3/8-inch OD compression tubing systems terminating at a 1/4-18 female NPT port. Cross-reference Swagelok part number B-600-7-4 for equivalent fitment.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified instrumentation mechanic familiar with compression fitting assembly. Always depressurize and isolate the line before disassembly or installation. Hand-tighten the compression nut onto the tubing, then advance with a wrench according to the fitting manufacturer's assembly instructions — do not overtighten, as this can deform the ferrule and compromise the seal. Verify working pressure compatibility with the connected system before returning to service.