420.0013.9755 - Fronius Contact Tip M8x1.5 x 44.5mm SW11 (Pack of 5)

Technical Overview: Fronius M8x1.5 Contact Tip

The Fronius M8x1.5/SW11X44.5 is a high-precision contact tip designed for industrial MIG/MAG welding applications. Often referred to in German engineering documentation as a "Stromdüse" (Current Nozzle), this component is critical for transferring welding current to the wire electrode with minimal resistance. This specific model features a robust M8 x 1.5 mounting thread, which provides a larger contact area for electrical transfer compared to standard M6 tips, reducing heat buildup at the thread interface.

With an overall length of 44.5mm, this tip is engineered for specific Fronius torch geometries where reach and gas flow dynamics are optimized for this length. The "SW11" designation indicates a Spanner Width (Schlüsselweite) of 11mm, requiring a standard 11mm wrench for installation. This larger hex size offers better torque transmission during tightening and removal, preventing rounding of the flats even after thermal cycling.

Manufactured to Fronius's exacting tolerances, the bore concentricity is strictly controlled to ensure consistent wire feeding and arc targeting. The use of high-grade copper alloy ensures excellent thermal conductivity and resistance to wear from the sliding wire. This pack contains 5 units, suitable for routine maintenance schedules in high-duty cycle environments.