Parker KP70219 Compression Tube Nut 5/16-24 1/8 Od Brass 10pk

Product Description

The PARKER KP70219 is a brass compression tube nut designed to secure tubing at compression fittings in fluid and pneumatic line assemblies. It mates with a compression fitting body and sleeve to create a leak-resistant mechanical connection without soldering or brazing. Sized for 1/8 inch outside diameter tubing with a 5/16-24 thread, this nut is a common consumable in refrigeration, instrumentation, and light hydraulic applications. Each package contains 10 nuts, making it practical for bench stock or field replenishment. The brass construction provides corrosion resistance and reliable thread engagement across a broad range of service conditions.

This compression tube nut is used wherever 1/8 inch OD tubing terminates at a compression-style fitting. Typical applications include refrigeration sensing lines, instrument tubing, oil lines, and low-pressure pneumatic circuits in both residential and light commercial mechanical systems. Plumbers, HVAC technicians, and instrumentation mechanics install these nuts during new assembly and when remaking connections during service or retrofit work.

Key Features

• 5/16-24 thread size for positive engagement with standard compression fitting bodies
• Sized for 1/8 inch outside diameter tubing
• Brass construction resists corrosion in wet and refrigerant-adjacent environments
• Compression end connection eliminates the need for solder or brazing
• Packaged in quantities of 10 for convenient bench stock replenishment

Compatibility

Designed as an OEM-style replacement compression tube nut for use with standard 1/8 inch OD tubing and 5/16-24 threaded compression fitting bodies in fluid and pneumatic line assemblies.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or instrumentation mechanics working on compression-style tubing systems. Shut off system pressure and depressurize the line completely before disassembling any compression connection. Thread the nut onto the fitting body by hand first, then tighten with the appropriate open-end wrench to avoid cross-threading or deforming the compression sleeve. Do not over-tighten brass compression nuts, as excess torque can crack the sleeve or distort the tubing seat.