000069B - Miller .045 Contact Tips for M-Series Guns (100 Bulk Pack)

Miller M-Series .045 Contact Tips (100 Pack) - 000069B

The Miller 000069B is a bulk inventory solution for welding operations utilizing .045" (1.2 mm) wire in Miller M-Series or Hobart H-Series MIG guns. This product consists of a bag of 100 genuine Miller contact tips, offering superior value and ensuring long-term supply for continuous welding applications. As a consumable that directly influences arc quality, the contact tip defines the electrical contact point for the welding wire; therefore, dimensional accuracy and material quality are paramount.

Technical Performance & Compatibility
These contact tips are manufactured from high-grade copper alloy to withstand the intense heat of the welding arc while maintaining excellent electrical conductivity. The internal bore is precision-drilled to accommodate .045" wire with the optimal clearance—tight enough to ensure consistent current transfer, yet loose enough to prevent friction and bird-nesting. They feature a standard threaded base that seats firmly into the gas diffuser, ensuring proper gas coverage alignment and heat dissipation.

Maintenance & Wear
Over time, the bore of a contact tip will wear into an oval shape ("keyholing") due to the friction of the moving wire and electrical erosion. This wear leads to an unstable arc and wandering wire placement. Having a bulk pack of 000069 tips allows operators to replace tips frequently at the first sign of wear, maintaining weld quality without hesitation due to cost or availability. These tips are compatible with a broad range of equipment, including the Millermatic 200, 210, 212, 250, 251, 252, and 300 series machines equipped with M-Series guns, as well as Hobart Handler and Ironman series welders with H-Series guns.