Parker 6 Btx-s Steel Flared Tube Nut 3/8 in 37 Degree

Product Description

The PARKER 6 BTX-S is a steel flared tube nut designed for use in 37-degree flare tube fitting assemblies. It threads onto a mating flare fitting body to secure a flared tube end and maintain a leak-free connection under pressure and elevated temperatures. Rated for a maximum working temperature of 500 degrees F (260 degrees C), this nut suits demanding hydraulic, pneumatic, and fluid transfer applications. At 0.73 inches in overall length and sized for 3/8-inch tube OD, it is a compact, single-piece component that licensed plumbers, pipefitters, and HVAC technicians install as part of standard flare assembly work.

This tube nut is used wherever 37-degree flare connections are specified in fluid power, refrigeration, fuel, and hydraulic line systems. It is appropriate for both residential and commercial installations where JIC-style or SAE flare fittings are the required connection type. The high-temperature steel construction makes it suitable for installations near heat sources or in engine and mechanical rooms where ambient conditions are elevated. Typical install scenarios include hydraulic lines, fuel delivery systems, and refrigerant-line service work.

Key Features

• 37-degree flare angle compatible with JIC and SAE J514 flare fitting standards
• Sized for 3/8-inch tube OD for direct fitment to standard flared tube ends
• Steel construction provides strength and durability at high working temperatures
• Rated to 500 degrees F (260 degrees C) maximum working temperature
• Meets ISO 8434-2 and SAE J514 standards for interchangeability and dimensional compliance
• Compact at 0.73 inches overall length for use in tight-space installations

Compatibility

Designed as an OEM-style replacement and standard component for 37-degree flare tube fitting assemblies using 3/8-inch tube OD, in compliance with ISO 8434-2 and SAE J514 specifications.

Installation Notes

Installation is typically performed by licensed pipefitters, HVAC technicians, or plumbers following applicable SAE and ISO flare fitting procedures. Depressurize and isolate the line completely before disassembling any flare fitting. Hand-tighten the nut onto the fitting body first to ensure proper thread engagement before applying a wrench to avoid cross-threading. Do not overtighten, as this can damage the flared tube seat and cause leaks.