10401915 - Tweco Classic 4 MIG Gun, 400A, 12ft, Miller Style

The Legend Returns

If you've been in the welding game for any amount of time, you know the Tweco Classic No. 4. It’s the gun that built half the bridges and skyscrapers in the country. This isn't a plastic toy; it's a heavy-duty tool designed for welders who burn wire all day, every day. With a 400-amp rating, this gun can handle the heat when you're cranking up the voltage for thick plate or structural beams. The 12-foot cable gives you just enough reach to move around your fixture without getting tangled in excess slack, keeping your feed smooth and your arc stable.

Built for the Shop Floor

The first thing you'll notice is the handle. The Classic No. 4 features that signature oval shape that fits perfectly in a gloved hand, giving you the leverage you need to manipulate the torch without hand fatigue. The trigger is responsive and durable, designed to survive millions of cycles. But it's not just about comfort—it's about survival. The cable is tough enough to get dragged over steel gratings and around sharp corners without failing. The metal-jacketed neck can take a beating if you accidentally drop it or bang it against the workpiece. It’s a gun that forgives rough handling and keeps on welding.

Plug and Play with Miller

This specific model comes ready to rock with a Miller-style back end. That means if you're running a Millermatic or a Miller wire feeder, you can plug this straight in—no adapters, no headaches. It uses the standard Tweco consumables you probably already have in your toolbox (14 series tips, 24 series nozzles). Changing parts is quick and easy, so you spend less time fiddling with your torch and more time laying beads. Whether you are replacing an old beat-up gun or upgrading to the industry standard, the Tweco Classic No. 4 is the reliable partner you need in the booth.