12621037 - Tweco 26-62-F MIG Nozzle, 5/8" Bore, Flush Tip (1262-1037)

Heavy-Duty Tweco 26 Series MIG Nozzle

The Tweco 1262-1037 (Model 26-62-F) is a premium MIG welding nozzle designed for high-performance industrial applications. Part of the renowned Tweco 26 Series, this nozzle is engineered to fit heavy-duty MIG guns, including the Spray Master 450, Eliminator 450, and the classic Professional No. 5 and No. 6 series. Manufactured from high-grade copper alloy, it provides superior thermal conductivity and resistance to spatter adhesion, ensuring a longer service life in demanding fabrication environments.

This specific model features a 5/8-inch (15.9 mm) bore, which is the standard size for general purpose and heavy-plate welding, offering a broad umbrella of shielding gas to protect the weld pool from atmospheric contamination. The "F" designation indicates a Flush tip relationship, meaning the contact tip sits flush with the end of the nozzle. This configuration is widely preferred for its versatility, allowing the welder to maintain a proper stick-out while keeping the contact tip sufficiently cooled and protected. It is an excellent choice for short-circuit transfer as well as spray transfer modes where consistent gas coverage is critical.

The 26-62-F nozzle is designed to work seamlessly with Tweco gas diffusers and insulators, ensuring a secure fit that minimizes gas leaks and turbulence. Its robust wall thickness helps dissipate heat effectively, reducing the risk of overheating during long weld cycles. Whether used in structural steel fabrication, heavy equipment manufacturing, or shipyards, this nozzle delivers the reliability and performance professionals expect from Tweco components.