Boshart BF-40 Forged Flare Nut Fitting for Gas & Fuel Applications

Boshart BF-40 Forged Flare Nut Fitting for Gas & Fuel Applications

The Boshart BF-40 is a short forged flare nut fitting designed for gas and fuel applications, as well as general plumbing and heating installations handling gas, oil, air, and water. Available in 3/8" and 1/2" sizes, this forged flare nut is built specifically for the demands of gas and fuel lines, distinguishing it from lighter-duty flare fittings on the market. Its forged construction is compatible with aluminum, brass, copper, and steel tubing, making the BF-40 a versatile choice for rough-in plumbers and mechanical contractors who work across multiple tubing materials on a single job site. Flare fittings of this style are designed to be disassembled and reassembled repeatedly without compromising the seal, which is a key advantage for service work, maintenance access, and future line modifications behind a wall or under a floor.

Key Features

• Trade Size Range: Offered in 3/8" and 1/2" sizes to match common gas, fuel, and mechanical tubing runs.
• Forged Construction: The BF-40 is a forged flare nut, built specifically for use on gas and fuel applications where a robust, durable fitting is required.
• Flare Connection Type: Standard flare-style connection allows the nut to be disassembled and reassembled multiple times without affecting the integrity of the seal.
• Multi-Material Compatibility: Suitable for use with aluminum, brass, copper, and steel tubing, giving installers flexibility when transitioning between tubing types on a single run.
• Multi-Application Use: Applicable in plumbing and heating systems carrying gas, oil, air, and water, making it a practical stock item for both fuel-line and general mechanical work.
• Contractor Pack: Supplied 25 each per package across both available sizes, suited to stocking trucks and rough-in crews that need on-hand quantities for repeated flare connections.

Technical Specifications

• Size Options: 3/8", 1/2"
• Country of Origin: China
• Packaging: 25 ea
• Prop 65 Warning: Lead

Typical Applications

• Gas and Fuel Line Rough-In Connections
• Residential and Commercial Heating System Installations
• Compressed Air Line Fittings
• Water Line Flare Connections
• Service and Repair Work Requiring Repeated Disconnection

Why Boshart?

Boshart supplies forged flare fittings built for the repeated make-and-break demands of gas, fuel, and mechanical piping work. The BF-40's forged construction and broad tubing compatibility make it a dependable choice for plumbers and contractors who need a flare nut that holds its seal through multiple service visits, whether working in 3/8" or 1/2" sizes. Stocked in contractor-friendly 25-count packaging, it's a practical addition to any rough-in or service truck inventory.