Shree Chamunda Brass Products

Precision SAE Tube Nut for HVAC & High‑Pressure Systems

5/16" UNF Flare Nut (Brass)

Precision-engineered brass flare nut with fine UNF threads for secure, leak‑proof copper tubing connections in HVAC, automotive, gas, and hydraulic use.

The 5/16" UNF Flare Nut (Brass) is a precision-engineered fitting widely used in air conditioning, refrigeration, automotive, and high-pressure piping systems. Designed with fine UNF threads, this flare nut ensures secure, leak-proof connections in copper tubing applications. Manufactured from high-quality brass, it offers excellent corrosion resistance, durability, and reliable sealing performance, making it ideal for both industrial and residential use.

Key Features

Customization available

Leak‑proof sealing with 45° metal‑to‑metal flare (no washers required)
High pressure resistance with UNF fine threads for superior grip and strength
Corrosion resistant (premium brass) for moisture/environmental exposure
Easy installation using flaring tool and wrench (no brazing/welding)
Durable and reliable for demanding industrial environments

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Material

Premium Brass

Size

5/16 inch (Thread Diameter)

Thread

UNF (Unified National Fine)

Applications

Where this product is commonly used — from standard assemblies to custom requirements.

HVACRefrigerationAutomotiveGas LinesHydraulic

HVAC Systems

Used in split air conditioners and refrigeration units for connecting copper pipes with strong, leak‑proof joints.

Automotive Industry

Ideal for brake lines and fuel lines where safe, vibration‑resistant fluid transfer is required.

Gas Pipeline Connections

Suitable for LPG and other gas systems, providing reliable sealing with copper tubing.

Hydraulic Systems

Used in low to medium pressure hydraulic lines for secure and efficient connections.

Why Choose This Product?

Built for accurate fitment, consistent finishing, and reliable performance in real‑world applications.

Benefits

Precision manufacturing with accurate threading
Smooth finishing for perfect fitting
Reliable performance in HVAC, gas, and automotive systems
High-quality brass for extended durability

Technical Specifications

Standard technical information. Custom specs are available on request.

Product Name

5/16" UNF Flare Nut

Material

Premium Brass

Type

Flare Fitting (Tube Nut)

Size

5/16 inch (Thread Diameter)

Thread Type

UNF (Unified National Fine)

Shape

Hexagonal (easy wrench tightening)

Flare Angle

45° Standard

Also Known As

SAE Flare Nut · Tube Nut · Refrigeration Nut · Inverted Flare Nut (specific designs)

Product Name	5/16" UNF Flare Nut
Material	Premium Brass
Type	Flare Fitting (Tube Nut)
Size	5/16 inch (Thread Diameter)
Thread Type	UNF (Unified National Fine)
Shape	Hexagonal (easy wrench tightening)
Flare Angle	45° Standard
Also Known As	SAE Flare Nut · Tube Nut · Refrigeration Nut · Inverted Flare Nut (specific designs)

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High-precision brass flare nut for secure, leak‑proof connections in AC and refrigeration copper tubing lines.

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3/8 inch Flare Nut

High-quality brass tube fitting designed to create secure, leak‑proof connections in AC/refrigeration, gas lines, automotive and hydraulic systems.

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1/2 inch Flare Nut

Widely used brass flare nut for secure copper tubing connections in HVAC, refrigeration, gas pipelines, and hydraulic lines.

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Need Custom Brass Components?

We can manufacture components as per your drawings and specifications. Contact us for a free quotation.

Quick contact

+91 8849056292 / +91 8849045239 info@shreechamundabrassproducts.com