12201305 - Tweco 22-37 Heavy Duty MIG Nozzle 3/8-Inch Bore (2-Pack)

Reliable Performance with Tweco 22-37 Nozzles

When you are in the middle of a long weld, the last thing you want is your nozzle overheating or clogging up instantly. The Tweco 22-37 Heavy Duty MIG Nozzle is built to handle the heat. Designed for welders who run Tweco #2, #3, or #4 guns, this nozzle is a workhorse in the shop. The "Heavy Duty" build means it has thicker copper walls than standard nozzles, helping it stay cooler longer and resist the beating that comes with daily fabrication work.

The standout feature of the 22-37 model is its 3/8-inch bore. While many standard jobs use a 1/2-inch or 5/8-inch opening, this tighter 3/8-inch opening is perfect for getting into tight corners or narrow V-grooves where a bulky nozzle just won't fit. It also helps focus your shielding gas right where you need it. Because it uses the classic Tweco slip-on design, you can easily slide it up or down to get your contact tip recess exactly where you like it—whether you prefer it flush for short-circuit MIG or recessed for spray transfer.

This pack comes with two nozzles, so you always have a backup in your toolbox. Whether you are repairing heavy equipment, working on automotive frames, or doing general fabrication, these genuine Tweco consumables ensure your gas coverage is consistent and your gun is performing at its best. Don't settle for cheap knock-offs that melt away; stick with the industry standard for durability and performance.