Parker BD-KP4428 Compression Tube Nut 1/4 in Od Ss 5 Pack

Product Description

The PARKER BD-KP4428 is a stainless steel compression tube nut designed to secure tubing in compression-style fittings. It provides a leak-resistant mechanical connection by threading onto a compression fitting body and compressing a ferrule against the outside diameter of the tubing. This nut is sized for 1/4 inch outside diameter tubing and is constructed from stainless steel for resistance to corrosion and high-cycle use. It is used by HVAC technicians, plumbers, and instrumentation installers wherever a reliable compression connection is required on small-diameter tubing. The package includes 5 nuts per unit, making it a practical stocking item for service vehicles and shop inventory.

This compression tube nut is suited for residential and light commercial applications including refrigeration lines, instrumentation tubing, hydraulic sensing lines, and plumbing connections where 1/4 inch OD tubing is used. Its stainless steel construction makes it appropriate for applications involving moisture, mild chemicals, or elevated temperatures where brass fittings may not be preferred. Technicians working on control tubing, pressure sensing circuits, or small-bore fluid lines will find this nut compatible with standard compression fitting assemblies.

Key Features

• Stainless steel construction resists corrosion and oxidation in demanding service environments
• Sized for 1/4 inch outside diameter tubing for compatibility with standard compression fitting bodies
• Compression end connection type provides a reliable, tool-tightened seal without soldering or flaring
• Sold in a 5-count package to support stocking and repeat service calls
• UNSPSC Code 27121700 for streamlined procurement and MRO cataloging

Compatibility

Designed as an OEM-style replacement or service component for compression fitting assemblies accepting 1/4 inch OD tubing. Consult fitting manufacturer specifications to confirm ferrule and body compatibility before installation.

Installation Notes

Compression tube nuts are installed by licensed plumbers, HVAC technicians, and instrumentation mechanics. Before servicing any fitting, isolate and depressurize the line and follow applicable IPC or IFGC requirements for the system type. Hand-tighten the nut onto the fitting body, then use an appropriately sized wrench to complete the connection — avoid overtightening, which can deform the ferrule and compromise the seal. Inspect the fitting for leaks after restoring system pressure.