Midwest Fasteners Solid Brass Inverted Flare Hex Nut

Midwest Fasteners Solid Brass Inverted Flare Hex Nut

The Midwest Fasteners Solid Brass Inverted Flare Hex Nut is a solid brass fastener engineered for tubing connections that demand a reliable, corrosion-resistant seal. Machined from brass and finished in brass, this hex nut mates with inverted flare fittings, making it a practical choice for fuel lines, refrigeration tubing, and other flare-style tube connections where a tight, leak-resistant joint matters. This family is available in trade sizes ranging from 3/16" through 3/8" - including 3/16", 1/4", 5/16", and 3/8" - so technicians can match the exact tubing diameter on hand. Each part is manufactured in the United States to consistent dimensional standards.

Key Features

• Size Range: Available in 3/16", 1/4", 5/16", and 3/8" trade sizes for standard inverted flare tubing connections.
• Material & Finish: Solid brass construction with a brass finish for natural corrosion resistance in plumbing, fuel, and refrigeration applications.
• Connection Type: Inverted flare design seats against a correspondingly flared tube end to create a mechanical, compression-style seal without additional sealant in many applications.
• Head Style: Standard hex nut profile for use with open-end or flare nut wrenches, allowing controlled torque during assembly.
• Country of Origin: Manufactured in the United States.
• Product Type: Hex nut configuration purpose-built for flare tubing hardware rather than general machine-thread applications.

Technical Specifications

• Product Type: Hex Nut
• Product Material: Brass
• Finish: Brass
• Connection Type: Inverted Flare
• Trade Size: 3/16" - 3/8"
• Country of Origin: United States

Typical Applications

• Fuel line and tubing connections requiring an inverted flare seal.
• Refrigeration and HVAC tubing assemblies using flare fittings.
• Hydraulic and pneumatic tube connections where a brass flare nut is specified.
• General maintenance and repair work on brass flare tube systems.
• Replacement of worn or damaged flare nuts on existing tubing runs across multiple tube diameters.

Why Midwest Fasteners?

Midwest Fasteners supplies this brass inverted flare hex nut family with consistent brass material and finish across every available size, giving contractors and maintenance techs a dependable part for flare tubing repairs and assemblies. Manufactured in the United States, each size is finished to work reliably with standard inverted flare fittings, supporting both new installations and repair work where matching an existing flare connection diameter is critical. Choosing from the 3/16" through 3/8" range means techs can stock a complete set of sizes from a single trusted brand.