Parker 66AB-4-2 Compression Tube Connector 1/8-27 Nptf

Product Description

The PARKER 66AB-4-2 is a brass compression tube connector designed to join a compression tube end to a female NPT port in fluid and pneumatic line assemblies. It features a 1/8-27 NPTF thread and a compression-by-FNPT end configuration, allowing a secure, leak-resistant connection without soldering or flaring. Rated to 400 psi maximum working pressure and a temperature range of -65 to 250 degrees F, this fitting is built for demanding service environments. Its brass construction resists corrosion and provides reliable performance in fuel, air, and hydraulic line applications. The fitting meets D.O.T. FMVSS571.106 and SAE J246 standards, confirming its suitability for safety-critical installations.

This connector is used in mobile equipment, fleet vehicle brake and fuel line systems, refrigeration tubing circuits, and light industrial pneumatic plumbing where a compression tube must terminate at a threaded female port. It is a common choice for OEM-style repairs and new installations in tight spaces where a compact, reliable tube-to-pipe transition is required. Licensed plumbers, HVAC technicians, and fleet maintenance professionals typically install this fitting during line replacement or system assembly work.

Key Features

• Compression x FNPT end configuration for tool-free tube-to-pipe transitions
• 1/8-27 NPTF thread standard ensures a pressure-tight, dry-seal connection
• 400 psi maximum working pressure for demanding fluid and pneumatic service
• Operating temperature range of -65 to 250 degrees F suits a wide range of media
• Brass construction provides corrosion resistance in fuel, air, and water lines
• Meets D.O.T. FMVSS571.106 and SAE J246 for safety-critical and mobile equipment use

Compatibility

Designed as an OEM-style replacement or new-installation compression connector for systems requiring a 1/8-27 NPTF female port interface with a compression tube end.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified fleet maintenance technicians. Always depressurize and isolate the line before removing or installing any compression fitting. Ensure the tube end is cut cleanly and squarely and is free of burrs before seating it in the compression fitting body. Refer to applicable codes such as FMVSS or SAE J246 installation guidelines for torque and assembly procedures specific to the system being serviced.