1/2" Female Thread - 3/8" Bore Brass Flare Nut (Air Conditioning and Refrigeration Piping)

Manufactured for safely joining copper tube lines in air conditioning and refrigeration systems, this brass flare nut stands out with its high durability and precise dimensions. With a 1/2" female thread connection size and a 3/8" copper tube bore, this special nut forms a leak-tight bridge between tubes and unit connections of different diameters.

Maximum Safety Under High Pressure

It is made of heavy-duty brass to withstand the high pressures of the refrigerants used in HVAC systems. Its precise thread form ensures full engagement during installation. By allowing the flared 3/8" copper tube to seat fully on the 1/2" male fitting face, it minimizes refrigerant leaks even under the toughest operating conditions.

Key Technical Features and Equipment

Technical details of this product, preferred in professional HVAC projects and service work:

• Product Type: Reducing Flare Nut / Fitting
• Thread Size: 1/2" SAE Female Thread
• Bore Diameter: 3/8" (copper tube bore)
• Material: High-quality forged brass, resistant to corrosion
• Compatible Systems: Split air conditioners, cold storage rooms, VRF systems and heat pumps

Practical Usage Note for Technicians in the Field

Technician's Note: When connecting the 3/8" tube with this 1/2" flare nut, make sure the flare head rests fully against the inner face of the nut. Since brass is a soft material, take care not to damage the threads by overtightening. Applying a very small amount of refrigeration oil to the flare face before installation both improves leak tightness and helps the nut tighten more easily.