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The PRO-SOURCE 11-45 is a MIG welder contact tip designed for wire with an outside diameter of 0.045 inches. The contact tip is the point of electrical transfer between the welding machine and the wire electrode, making consistent tip-to-wire fit essential for stable arc performance and clean welds. This tip fits into the MIG gun nozzle assembly and is a consumable component replaced routinely during production welding and repair work. Welders and fabricators working with 0.045-inch solid or flux-core wire will find this tip sized to maintain proper electrical contact throughout the weld cycle.
This contact tip is suited for use in MIG welding applications where 0.045-inch wire feed is standard, including structural fabrication, heavy-gauge sheet metal work, and general repair welding. It is a replacement consumable intended for professional welding environments where tips are cycled frequently due to spatter buildup, bore wear, or threading damage. The single-piece packaging with a minimum order quantity of 10 makes it practical for shop stock or service truck inventory management.
Designed as an OEM-style replacement contact tip for MIG welding guns that accept 0.045-inch wire outside diameter consumables.
Contact tip replacement is performed by qualified welders or maintenance technicians. Always disconnect or power down the welding machine before removing or installing a contact tip to prevent accidental arc initiation. Use the appropriate tip wrench or pliers to avoid cross-threading the tip into the diffuser body. Inspect the tip bore for elongation or spatter bridging before reinstalling the nozzle assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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