000068 - Miller 000068 .035 Contact Tips for M-Series MIG Guns (10-Pack)

Technical Overview of Miller 000068 Contact Tips

The Miller 000068 Contact Tip is a standard consumable component designed for the Gas Metal Arc Welding (GMAW) process, specifically engineered for use with .035-inch (0.9 mm) welding wires. These tips are manufactured to precise tolerances to ensure optimal electrical conductivity and thermal transfer at the arc zone. The contact tip serves as the final point of electrical contact between the welding power source and the electrode wire, making its dimensional accuracy critical for maintaining a stable arc and consistent current transfer.

This specific SKU is compatible with a broad range of Miller M-Series MIG guns, including the M-10, M-15, M-25, M-40, M-100, and M-150 models. It is also cross-compatible with Hobart H-Series guns, providing versatility for mixed-equipment environments. The tip features a length of 1.30 inches, a standard dimension for these gun assemblies, ensuring proper seating within the gas diffuser and correct nozzle stick-out relationships.

Constructed from high-grade copper alloy, the 000068 tip resists the intense heat of the welding arc while minimizing wear from the sliding friction of the wire. However, as a consumable, the bore will eventually wear or "keyhole," leading to erratic arc characteristics. Regular replacement is necessary to maintain weld quality. This product is supplied in a package of 10, facilitating routine maintenance schedules in industrial settings. It is suitable for use with both solid MIG wires and flux-cored wires of the corresponding diameter.

Technicians should verify the wire diameter matches the stamped size on the tip (.035") to prevent micro-arcing inside the tip (if too loose) or feeding issues (if too tight). This tip is the standard OEM part for many popular Millermatic machines, including the Millermatic 140, 180, 211, 212, and 252.