112420 - Miller 112420 Slip-On MIG Nozzle, 3/8 Inch Orifice

Get Into Tight Spots with the Miller 3/8" Slip-On Nozzle

Struggling to see your puddle in a tight corner? The standard 1/2-inch nozzle might be blocking your view or getting hung up on the workpiece. The Miller 112420 3/8-inch slip-on nozzle is the perfect solution for those intricate welds. By narrowing the front end of your MIG gun, this nozzle gives you better visibility and allows you to maneuver into restricted spaces that a standard nozzle just can't reach. It's an essential upgrade for automotive bodywork, exhaust fabrication, or any project with complex geometries.

We all know that time is money, and threading a nozzle on and off to clean out spatter or change a contact tip is a hassle. This nozzle features Miller's convenient slip-on design. Just twist and pull to remove it, and push it back on when you're done. It stays secure thanks to the internal friction spring (on the adapter) or the tight tolerance fit, ensuring it doesn't fall off while you're welding overhead. The solid copper construction stands up to the heat, and because it's a genuine Miller part, you know it fits your M-10, M-15, or M-25 gun perfectly.

This nozzle is standard equipment on many smaller Millermatic machines for a reason—it works great for short-circuit MIG welding. The 3/8-inch orifice concentrates the shielding gas, which is ideal for the lower voltage and amperage settings typically used on sheet metal. It helps save gas while still providing excellent coverage to keep porosity out of your welds. Whether you are a hobbyist with a Millermatic 140 or a pro using an M-25 gun on a larger machine, keeping a few of these 3/8-inch nozzles in your kit can save the day when space is tight.

Don't let a bulky nozzle compromise your weld quality. Switch to the 112420 for better access and control. Remember to keep it clean with a pair of welpers or a nozzle reamer, and maybe a dip in some nozzle gel, to keep that gas flowing smoothly. It's a small part that makes a big difference in your comfort and weld appearance.