Parker 661FHD-8-10 Brass Male to Female Flare Fitting

Product Description

The PARKER 661FHD-8-10 is a brass flare union fitting designed to connect male flare and female flare tube ends in refrigeration, HVAC, and fluid system applications. It transitions between 1/2 inch and 5/8 inch tube outside diameters using a 45-degree flare angle and a 7/8-14 UNF thread on the male end, with a reduced thread size of 3/4-16 on the female end. Constructed entirely from brass, this fitting handles working pressures up to 750 psi and temperatures up to 250 degrees F. It is sold individually and is a standard catalog component for licensed HVAC and refrigeration technicians.

This fitting is suited for residential and light commercial HVAC systems, refrigeration lines, and other fluid or gas circuits where SAE-standard flare connections are required. The 45-degree flare geometry conforms to SAE J512 and SAE J513 standards. The reduced thread on the female end accommodates the step-down between the two tube sizes, making it appropriate for applications where line sizes change at a junction point. Installation is performed by HVAC technicians and refrigeration mechanics working with copper or compatible tubing systems.

Key Features

• 45-degree flare angle per SAE J512 and SAE J513
• Brass construction for corrosion resistance in refrigerant and fluid service
• Handles up to 750 psi working pressure
• Rated to 250 degrees F (121 degrees C) maximum working temperature
• Male end: 7/8-14 UNF thread; female end: 3/4-16 reduced thread
• UL Listed; meets SAE J512, SAE J513 standards

Compatibility

Designed for use with 1/2 inch and 5/8 inch OD tubing in SAE 45-degree flare systems conforming to SAE J512 and SAE J513 specifications.

Installation Notes

Installation should be performed by a licensed HVAC technician or refrigeration mechanic. Depressurize and recover any refrigerant from the system before disconnecting or installing flare fittings. Use a calibrated flaring tool to form consistent 45-degree flares on the tubing ends before making up the connection. Do not overtighten; refer to applicable SAE and system manufacturer guidance for proper assembly practices.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.