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The PRO-SOURCE 4282 is a MIG welder contact tip designed for use with 0.045-inch diameter wire. The contact tip is the consumable component at the end of a MIG welding gun through which the wire electrode passes and makes electrical contact. Current transfers from the gun to the wire at this point, enabling the arc. This tip is sized specifically for 0.045-inch wire, making it suitable for moderate to heavy-duty MIG welding applications. It measures 2 inches in length with a 0.31-inch diameter body and weighs approximately 0.036 pounds. Welders and fabricators replace these tips as part of routine gun maintenance to maintain consistent arc quality and wire feed performance.
This contact tip is used in MIG welding setups where 0.045-inch solid or flux-core wire is fed through a standard MIG gun. Typical applications include structural fabrication, manufacturing, and maintenance welding on heavier-gauge steel and other weldable metals. It is installed by welding professionals and skilled fabricators performing routine consumable replacement during production or repair work. The tip is sold individually with a minimum order quantity of 10 units, making it practical for shop stock or service inventory replenishment.
Designed as a replacement contact tip for MIG welding guns that accept 0.045-inch wire. Verify thread type and overall tip dimensions against your specific gun manufacturer specifications before ordering.
Contact tips are replaced by welders or fabricators as part of standard MIG gun maintenance. Always disconnect the welding gun from the power source and allow the tip to cool completely before removal. Use the appropriate tip wrench to avoid cross-threading when installing the replacement tip. Inspect the nozzle and liner for wear at the same time to ensure consistent wire feed and arc performance.
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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