Canadian owned and operated
If you have spent any time in a heavy fabrication shop, you have likely held a Tweco Classic No. 4. This isn't just a MIG gun; it's an extension of your arm. The SKU 10401912 delivers that familiar, rugged feel with a 15-foot cable that gives you the freedom to move around large weldments without dragging the feeder with you. Rated at 400 Amps, this air-cooled beast is built to handle the heat, letting you lay down long beads on thick structural steel without the handle getting too hot to hold.
The Classic No. 4 features the iconic paddle-style trigger that is large enough to operate easily even when wearing heavy welding gloves. The handle shape is oval and textured, providing a secure grip that reduces hand fatigue during long shifts. Unlike lighter-duty guns that feel flimsy, the Classic 4 has a reassuring weight and balance. The metal-jacketed conductor tube is tough enough to use for clearing spatter (though we recommend a pair of pliers!) and resists bending if dropped.
One of the best things about this gun is how easy it is to keep running. Changing a contact tip or nozzle takes seconds. The Tweco consumables (14 Series tips and 24 Series nozzles) are everywhere, so you never have to worry about hunting for proprietary parts. The 15-foot cable uses a heavy-duty copper stranding that ensures smooth arc starts and stable voltage, even when the cable is looped. The liner is robust and resists kinking, ensuring your wire feeds smoothly whether you are running .035" solid wire or 1/16" flux core.
When you need a gun that works as hard as you do, the Tweco Classic No. 4 is the only real choice. It’s simple, it’s tough, and it gets the job done.
| Additional Information |
|---|
| Amperage:400 |
| Cable Length:15 ft |
| Brand:Tweco |
| Packaging Description:1 Per Ea |
| Process Type:MIG (GMAW), Flux Cored (FCAW) |
| Cooling Method:Air Cooled |
| Connection Type:Tweco Style |
| Duty Cycle:60% @ 400A (CO2) |
| Wire Diameter Capacity:Up to 5/64" (2.0mm) |
