Tweco 35-CT Coarse Thread Nozzle Insulator for No. 3 & 4 MIG Guns

Reliable Protection for Your Tweco MIG Gun

Keep your MIG torch running at peak performance with the genuine Tweco 35-CT Nozzle Insulator. If you are running a Tweco #3 or #4 gun, you know that the front-end parts take a beating from heat, spatter, and rough handling. The insulator is often the unsung hero of your setup—it holds everything together and keeps you from shorting out your nozzle against the table or the part you are welding. When this part cracks or the threads strip, your gas coverage suffers, and you risk damaging your expensive consumables.

The 35-CT (1350-1400) features a coarse thread design. Why does this matter? If you've ever struggled to unscrew a nozzle or insulator that's been baked on by heat and spatter, you'll appreciate the coarse threads. They are tougher, deeper, and much more resistant to stripping or getting stuck compared to fine threads. This means faster change-outs on the bench and less frustration in the middle of a job. This insulator is built to withstand the high amperage heat of 300A and 400A welding without melting or becoming brittle prematurely.

This part is essential if you are using 24CT series nozzles. Don't settle for cheap knock-offs that might not fit right or could crumble under heat. Stick with Tweco OEM parts to ensure your gas flow stays smooth and your arc stays stable. Whether you are fabricating structural steel or doing heavy repairs, a fresh insulator is a cheap insurance policy for high-quality welds.