420001646710 - Fronius Steel Contact Tip 1.2mm (.045") M8x32mm - 10 Pack

Precision Engineering for Fronius Systems

The Fronius 1.2mm (.045") M8 Contact Tip (Part Number: 42,0001,6467,10) represents the high standard of engineering expected from Fronius welding consumables. Designed specifically for the MTG 320i MIG gun platform, often paired with the TransSteel 2200 and similar power sources, this contact tip is a critical component for maintaining process stability in steel welding applications. The tip features a precise 1.2mm bore that accommodates .045" solid steel wires with optimal clearance, ensuring consistent current transfer from the power source to the filler metal. This is vital for minimizing micro-arcing inside the tip, which can lead to premature wear, keyholing, and unstable arc characteristics.

Constructed from a durable copper alloy, this contact tip is optimized for the thermal dynamics of steel welding. The material composition balances electrical conductivity with hardness, resisting the abrasive wear caused by the continuous feeding of steel wire. The M8 x 1.5 thread specification ensures a robust mechanical connection to the tip holder or gas diffuser, facilitating maximum heat transfer away from the tip and into the gun neck. This thermal management is essential for preventing the tip from overheating, which can cause the wire to soften prematurely or fuse to the tip (burnback).

With a length of 32mm, this tip is dimensionally matched to the nozzle geometry of the MTG 320i, ensuring the wire stick-out is positioned correctly relative to the shielding gas envelope. This geometry is crucial for preventing porosity and ensuring proper weld bead profile. Industrial environments demand reliability, and using genuine OEM consumables like this Fronius contact tip ensures that the welding system operates within its designed parameters. This product is supplied in a package of 10, providing a necessary buffer for production environments where uptime is critical and consumable replacement is a routine part of maintenance.

Operators utilizing the Fronius TransSteel series will find that adhering to genuine Fronius consumables maintains the synergy lines and pre-programmed welding characteristics of the machine. Generic tips often lack the precise bore concentricity and surface finish of the OEM part, leading to erratic wire feeding and arc wandering. By choosing the 42,0001,6467,10 contact tip, users ensure the longevity of their torch front-end parts and the quality of their finished welds.