Jb Industries ns4-6 Short Forged Refrigeration Nut 3/8 in Brass

Product Description

The JB INDUSTRIES ns4-6 is a short forged refrigeration nut machined from high-grade brass consisting of 65% copper and 35% zinc. This alloy composition delivers higher tensile strength and strong corrosion resistance compared to lower-grade import fittings with reduced copper content. The ns4-6 is designed for use in refrigeration and HVAC systems where a reliable flare connection is required. HVAC technicians and refrigeration service pros use this fitting when assembling or servicing refrigerant line sets and associated components.

This nut is suited for residential and commercial refrigeration and air conditioning applications. It is compatible with copper, brass, aluminum, steel, and plastic tubing where an acceptable flare can be generated. The 3/8 inch nominal size makes it a common choice for standard refrigerant line connections. JB INDUSTRIES manufactures this fitting at their facility in Aurora, Illinois, maintaining tight dimensional tolerances for consistent field performance.

Key Features

• Forged brass construction using 65% copper and 35% zinc alloy for high tensile strength
• Short body profile for use in tight or confined fitting locations
• Corrosion-resistant material suitable for refrigerant service environments
• Compatible with copper, brass, aluminum, steel, and plastic tubing where proper flare is achievable
• Rated to handle vacuum pressures up to 5000 psi depending on size, material, and conditions
• Domestically manufactured at the JB INDUSTRIES factory in Aurora, Illinois

Compatibility

Compatible with copper, brass, aluminum, steel, and plastic tube provided an acceptable flare can be generated with the material. Designed for use in refrigeration and HVAC flare-fitting assemblies at the 3/8 inch nominal size.

Installation Notes

Installation should be performed by a licensed HVAC or refrigeration technician in accordance with applicable codes and system manufacturer guidelines. Recover all refrigerant and depressurize the system before disassembling any flare connections. Ensure the mating tube end is properly flared using a calibrated flaring tool before torquing the nut onto the fitting. Do not overtighten, as brass flare nuts can crack or distort if excessive force is applied.