Flare Nut
Showing all 5 results
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Brass Fitting
1/2″ O.D. Tubing Flare Nut, 307 Standard
Built strictly to 307 Standard specifications, this 1/2 inch aluminum flare nut delivers precision threading and robust wall thickness for critical HVAC and refrigeration piping networks. It forms an airtight metal-to-metal seal when mated with standard 45-degree flared copper tubing, preventing costly refrigerant loss over years of heavy cycling. Its corrosion-resistant material construction guarantees reliable performance even in moisture-prone condensing unit compartments and outdoor environments.
SKU: TTFN-ALU-12 -
Brass Fitting
1/4″ (6.35mm) O.D. Tubing Flare Nut Long Design
Featuring an extended barrel configuration, this 1/4 inch (6.35mm) long-design aluminum flare nut offers enhanced thread engagement and superior grip for high-vibration HVAC applications. The extended length provides extra structural support right behind the flare, safeguarding the copper tube against cracking or stress fracture under continuous compressor operation. Ideal for tight service spaces and critical liquid lines, it guarantees a robust, long-lasting mechanical seal for refrigeration systems.
SKU: TTFN-ALU-14-L -
Brass Fitting
3/4″ (19.05mm) O.D. Tubing Flare Nut
Engineered specifically for larger HVAC and refrigeration systems, this high-quality aluminum flare nut provides exceptional clamping force to secure 3/4 inch (19.05mm) soft copper tubing. It facilitates a reliable, leak-tight mechanical seal without requiring complex soldering or brazing operations on site. Manufactured from durable, corrosion-resistant alloy, it withstands high working pressures and continuous thermal expansion, ensuring long-lasting performance in demanding commercial and residential installations.
SKU: TTFN-ALU-34 -
Brass Fitting
3/8″ (9.53mm) O.D. Tubing Flare Nut
This precision-crafted 3/8 inch (9.53mm) aluminum flare nut is engineered to provide secure mechanical connection points for liquid and gas lines in modern air conditioning units. It features clean, uniform internal threads that allow smooth tightening onto service valves and union fittings without binding or cross-threading. Providing an exceptional airtight seal under high system pressures, it is an indispensable hardware piece for professional HVAC technicians.
SKU: TTFN-ALU-38 -
Brass Fitting
5/8″ (15.88mm) O.D. Tubing Flare Nut
Designed for secure and dependable copper line connections, this 5/8 inch (15.88mm) aluminum flare nut is a vital component for standard split-system air conditioners and heat pumps. It evenly distributes tightening torque against the flared copper tube end to prevent refrigerant leaks under high operational pressures. Built to resist vibration fatigue and environmental degradation, it ensures a tight, professional-grade mechanical joint that simplifies both installation and future maintenance tasks.
SKU: TTFN-ALU-58
