12101122 - Tweco 21-62-F MIG Gun Nozzle, 5/8 Inch Bore, Flush Tip, 2-Pack

Product Overview

The Tweco 21-62-F is a standard duty MIG welding nozzle belonging to the widely used 21 Series of consumables. This product is supplied in a package of two, ensuring that welding stations remain stocked with essential replacement parts. The nozzle features a 5/8-inch (15.9 mm) bore orifice, which is the industry standard for general-purpose fabrication, providing a balance between gas coverage and accessibility. The "F" in the part number designates a "Flush" relationship, meaning the contact tip will sit flush with the end of the nozzle when installed correctly with a standard gas diffuser and contact tip.

Technical Specifications

Designed for use with Tweco #1 (180 Amp) and Tweco #2 (250 Amp) air-cooled MIG guns, this nozzle is also compatible with various aftermarket guns that utilize the Tweco 21 Series front-end consumable platform. The unit is constructed from a high-quality copper alloy, engineered to withstand the thermal cycling inherent in semi-automatic welding processes. It features a 0.938-inch (23.8 mm) outer diameter. The 3-piece design includes the outer copper shell, a high-temperature insulator, and the threaded insert, although it is sold as a complete, pre-assembled unit ready for installation.

Inventory and Application

Stocking the 21-62-F is recommended for facilities utilizing light to medium fabrication setups. The flush nozzle configuration is often preferred in short-circuit MIG welding where the operator requires a clear line of sight to the arc and puddle. It eliminates the recess found in other models, potentially altering the stick-out distance and arc characteristics. This SKU (12101122) represents a blister pack or bag containing two individual nozzles, making it an ideal unit of measure for retail display or tool crib distribution.