12101302 - Tweco 21T-37-F Threaded MIG Nozzle 3/8 Inch Bore Flush Tip (2-Pack)

Reliable Tweco MIG Nozzles for Consistent Welds

When it comes to MIG welding, the quality of your consumables plays a direct role in the quality of your weld. The Tweco 21T-37-F MIG Nozzle is a standard industry choice for welders using Tweco No. 1 and No. 2 series MIG guns. This package contains two (2) high-quality nozzles, ensuring you have a backup ready when you need it most. Designed with a threaded connection, these nozzles screw securely onto your gas diffuser, preventing the wobbling or loosening that can sometimes occur with slip-on models during extended use.

The 21T-37-F features a 3/8-inch (9.5mm) bore, which creates a tighter, more focused shielding gas column. This is particularly useful for welding in tighter spaces or when working on thinner materials where precision is key. The "F" in the part number stands for Flush, meaning the contact tip sits flush with the end of the nozzle. This configuration is favored by many operators because it provides excellent visibility of the weld puddle while maintaining adequate gas coverage, making it easier to control the arc and bead appearance.

At Josef Gas, we understand that downtime costs money. That's why we stock genuine Tweco consumables like the 1210-1302 nozzle kit. Whether you are repairing automotive body panels, fabricating light steel structures, or performing general maintenance, these nozzles deliver the performance and durability you expect from the Tweco brand. Their copper alloy construction withstands high heat, resisting spatter adhesion and extending the service life of the consumable.

Key Benefits:

• Secure Fit: Threaded design ensures concentricity and stability.
• Optimal Visibility: Flush tip relationship helps you see the arc clearly.
• Versatile Use: Fits widely used Tweco No. 1 and No. 2 guns.
• Value Pack: Comes as a pack of 2 for convenience.