Parker 43F-6-10 Brass Flare to Solder 3/8 in Tube 45 Degree

Product Description

The PARKER 43F-6-10 is a brass flare-to-solder adapter fitting designed to connect a 45-degree flared tube to a solder-joint fitting in refrigeration, HVAC, and plumbing systems. The fitting accepts a 3/8-inch OD flared tube on one end and transitions to a 5/8-18 UNF threaded connection on the solder end, allowing a secure mechanical joint between flared copper tubing and soldered copper components. Constructed from brass, this fitting delivers reliable corrosion resistance in both wet and refrigerant-carrying service. HVAC technicians and plumbers install this fitting where tubing runs must transition between connection types without sacrificing joint integrity.

This fitting is suited for residential and light commercial HVAC and refrigeration applications where 3/8-inch OD copper tubing terminates at an assembly requiring a solder connection. Typical install scenarios include refrigerant line sets, copper water supply lines, and other systems using SAE 45-degree flare tubing. The 5/8-18 UNF thread size is a standard SAE flare thread for 3/8-inch OD tubing, making this a common crossover fitting in service and new-installation work.

Key Features

• Brass construction for corrosion resistance in refrigerant and water service
• 3/8-inch tube OD accepts standard 45-degree SAE flared copper tubing
• 5/8-18 UNF thread standard for secure, leak-free flare connection
• Flare-to-solder configuration bridges two common tube-joining methods in a single fitting
• Compact, lightweight design at 0.07 pounds for easy handling in tight spaces

Compatibility

Designed for use with 3/8-inch OD copper tubing terminated with a 45-degree SAE flare, connecting to solder-joint copper fittings or components with a 5/8-18 UNF threaded port.

Installation Notes

Installation is performed by licensed HVAC technicians or plumbers. Before installation, isolate and depressurize the system and recover any refrigerant in accordance with EPA Section 608 regulations. Ensure the flare is formed correctly using a quality flaring tool before threading the fitting to avoid leaks at the joint. The solder end must be properly cleaned, fluxed, and sweated using accepted trade practices before pressurizing the system.