621-0394-25 - MK Products 0.074 Contact Tip for Python & Cobra Guns (Pack of 25)

Reliable Performance for Aluminum Welding

When you are welding aluminum, the smallest details in your gun's front end can make the difference between a buttery smooth bead and a bird's nest of tangled wire. The MK Products 621-0394 Contact Tip is built specifically for the demands of aluminum fabrication. If you are running 1/16-inch wire through a Python, Prince XL, or Cobra MX gun, this is the tip you need to keep your operation running smoothly. The 0.074-inch internal diameter is slightly oversized relative to the wire, allowing the aluminum to expand as it gets hot without grabbing the walls of the tip. This design eliminates the friction that causes erratic feeding and burnbacks, ensuring you get the consistent arc start and stability that MK push-pull guns are famous for.

Built for the Heat
Aluminum welding often requires high amperage, which generates intense heat at the contact point. These tips feature a robust 3/8-inch outside diameter, providing plenty of copper to soak up and dissipate that heat. This means the tip stays cooler for longer, maintaining its structural integrity and conductivity even during long welds on thick plate. A cooler tip means less spatter adhesion and fewer interruptions to change out consumables.

Genuine OEM Quality
Don't risk your weld quality with generic knock-offs that might have rough bores or incorrect threading. These are genuine MK Products OEM parts, machined to exact tolerances to fit your 621-0424 diffuser perfectly. Whether you are building trailers, boats, or aerospace components, using the correct contact tip ensures optimal electrical transfer to the wire. This pack contains 25 tips, ensuring you have plenty of stock on hand to keep your production line moving without interruption.