Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread
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Brass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF ThreadBrass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread

Brass Single Flare Fitting for Copper Refrigeration Tube — UNF Thread

HomeDIYer
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By HomeDIYer®

Price:
$7.06 USD
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In stock (500 units), ready to be shipped

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Description

 

Brass Single Flare Fittings — Reliable Connections for Copper Refrigeration Tube

When a refrigeration line leaks or an HVAC repair calls for a secure tube connection, the fitting you choose makes all the difference. HVAC technicians, refrigeration mechanics, and serious DIYers working with copper flare lines need a brass single flare fitting that threads on cleanly, seats without distortion, and holds pressure without weeping. A loose or mismatched connector wastes refrigerant, delays the job, and risks system damage.

Each piece is a solid brass single flare connector machined with UNF (Unified National Fine) threads. Available in six thread sizes — 7/16", 9/16", 5/8", 3/4", 7/8", and 1-1/16" UNF — to cover the most common copper tube diameters used in residential and light commercial refrigeration. Order in quantities of 1, 3, 5, or 10 pieces to match your job size.

Typical use cases include connecting copper suction and liquid lines in split-system air conditioners, repairing refrigerant circuits in commercial refrigeration cases, and assembling custom copper tube runs for heat pump installations — all applications where a dependable single flare copper tube connection is essential.

🔧 Compatibility Note: These fittings use UNF threads and are designed for use with single-flared copper tubing. Verify your tube OD and flare angle (typically 45°) before ordering. Thread size corresponds to the flare nut thread, not the tube OD — see FAQ below for the size guide.

✅ Key Features of These Brass Single Flare Fittings

  • 🟡Solid Brass Construction — Machined from brass for reliable corrosion resistance and compatibility with copper refrigeration tubing and common refrigerants including R-410A and R-22.
  • 🔩UNF Thread Standard — Unified National Fine threads provide a tighter thread engagement than coarse threads, reducing the risk of loosening under vibration in refrigeration and HVAC systems.
  • 📐Six Thread Sizes Available — Covers 7/16" through 1-1/16" UNF to match the most common copper tube diameters used in residential and light commercial single flare copper tube connections.
  • 🔄Single Flare Design — Engineered for single-flared tube ends, making installation straightforward with a standard flaring tool — no special adapters or secondary operations required.
  • 📦Flexible Pack Quantities — Available in 1, 3, 5, or 10-piece packs so you can stock exactly what you need for a single repair or a multi-unit installation job.
  • 🚚Ships from US Warehouse — Stocked domestically for faster delivery to HVAC contractors and refrigeration technicians across the continental United States.

📐 Technical Specifications — Brass Single Flare Fittings

Product Type Single Flare Connector / Flare Fitting
Material Brass
Thread Standard UNF (Unified National Fine)
Available Thread Sizes 7/16", 9/16", 5/8", 3/4", 7/8", 1-1/16" UNF
Flare Type Single Flare (45° — typical; confirm with your system spec)
Compatible Tube Material Copper (flared end required)
Typical Application Refrigeration lines, HVAC copper tube connections, heat pump systems
Pack Quantities 1 Pcs, 3 Pcs, 5 Pcs, 10 Pcs
Finish See variant options
Pressure Rating Contact us to confirm
Country of Origin See variant options
⚠️ Spec Confirmation: Pressure ratings and exact flare angle vary by application. If you are unsure whether this fitting suits your system, please contact us before ordering.

❓ Frequently Asked Questions

How do I choose the right thread size for my copper tube?

Match the fitting thread size to your copper tube's outer diameter. As a general guide:

  • 7/16" UNF — typically fits 1/4" OD copper tube
  • 9/16" UNF — typically fits 3/8" OD copper tube
  • 5/8" UNF — typically fits 1/2" OD copper tube
  • 3/4" UNF — typically fits 5/8" OD copper tube
  • 7/8" UNF — typically fits 3/4" OD copper tube
  • 1-1/16" UNF — typically fits 7/8" OD copper tube

Always verify against your system's spec sheet or the existing fitting before ordering. Thread size refers to the flare nut thread, not the tube OD directly.

What material are these flare fittings made from?

These fittings are made from brass, which generally offers good machinability, corrosion resistance, and broad compatibility with refrigerants and copper tubing used in HVAC and refrigeration systems. Brass is a standard material choice for flare fittings in these applications.

Can these fittings be used outdoors or in humid environments?

Brass typically performs well in moderately humid environments and is commonly used in outdoor HVAC condensing units. For highly corrosive or marine environments, additional protective measures may be advisable. Contact us to confirm suitability for your specific installation conditions.

Are these fittings compatible with standard SAE flare connections?

These fittings use UNF (Unified National Fine) threads, which are generally compatible with SAE 45° single flare standards widely used in refrigeration and HVAC systems. Always verify thread pitch and flare angle against your equipment's service manual to ensure a proper match.

How strong is the connection made by a single flare fitting?

Single flare fittings are generally suitable for low-to-medium pressure refrigeration lines. For high-pressure applications, a double flare or inverted flare connection is typically recommended by industry standards. Check your system's operating pressure rating and consult the equipment manufacturer's guidelines before selecting a fitting type.

What refrigerants are compatible with these brass fittings?

Brass fittings are generally compatible with common refrigerants such as R-22, R-410A, R-134a, and R-404A when used with copper tubing. Compatibility with newer HFO-based refrigerants (e.g., R-32, R-454B) should be confirmed with your system manufacturer, as some formulations may have specific material requirements.

Do I need a flaring tool to install these fittings?

Yes. A single flare requires a flaring tool to form the cone-shaped end on the copper tube before the fitting nut is tightened. Using a proper flaring tool — sized to your tube OD — ensures a leak-free seal at the connection point. Improper flaring is the most common cause of leaks at flare joints.

🛒 Select your thread size and quantity above, then add to cart — ships from our US warehouse.

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