Parker 12 Btx-s Steel Flared Tube Nut 3/4 in 37 Degree

Product Description

The PARKER 12 BTX-S is a steel flared tube nut designed for use with 3/4 inch OD tubing and a 37-degree flare angle. This fitting secures flared tube ends to mating fittings in hydraulic, pneumatic, and fluid transfer systems. It is manufactured from steel and rated for a maximum working temperature of 500 degrees F (260 degrees C). The overall length is 1.03 inches. Plumbers, hydraulic technicians, and mechanical contractors use this nut when assembling or servicing flared-end tube connections in medium- and high-pressure fluid lines.

The 12 BTX-S is suited for applications where a reliable, leak-resistant flare fitting connection is required. Common install scenarios include hydraulic system plumbing, fuel lines, refrigeration tubing assemblies, and instrumentation lines that use 37-degree JIC-style flare ends. It is appropriate for both residential and light commercial mechanical systems where steel fittings and SAE-standard flare connections are specified.

Key Features

• 37-degree flare angle compatible with JIC and SAE J514 flare fitting standards
• 3/4 inch tube OD sizing for secure engagement with matching flared tube ends
• Steel construction provides durability in high-temperature and high-pressure environments
• Maximum working temperature of 500 degrees F (260 degrees C)
• Overall length of 1.03 inches for compact installation clearance
• Meets ISO 8434-2, SAE 070110, and SAE J514 standards

Compatibility

Designed as an OEM-style replacement or service fitting for fluid systems using 3/4 inch OD tubing with a 37-degree flared end connection per SAE J514 and ISO 8434-2 specifications.

Installation Notes

Installation should be performed by a qualified plumber, hydraulic technician, or pipefitter. Depressurize and drain the system completely before removing or replacing any flare fitting component. Hand-tighten the nut onto the mating fitting first to confirm thread engagement, then torque to the value specified by the system designer or equipment manufacturer. Do not over-tighten steel flare nuts, as this can deform the flare seat and cause leaks.