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The TWECO 1150-1206 is a 15 Series Heavy Duty MIG contact tip designed for 0.062 inch (1/16 inch) wire with a 0.073 inch nominal bore diameter. Built from extruded or gun-drilled 122 DHP copper alloy and machined from copper alloy tubing, it delivers a consistent, smooth inside diameter held to a tolerance of plus or minus 0.003 inches. At 1.97 inches in length with a 5/16 inch-18 UNC-2A thread, this tip is rated for use in heavy duty welding applications up to 500 amps. Licensed welders and MIG gun technicians install this tip as a consumable replacement in high-amperage welding operations. Sold in packs of 25.
This contact tip is designed for use with 200 to 500 amp Tweco No. 5 MIG guns and compatible MIG gun series requiring the 15H tip style. The threaded style ensures solid contact with the gas diffuser upon installation. It fits both slip-on and thread-on nozzle configurations. Its thick-walled copper construction acts as a heat sink, conducting heat away from the arc source during sustained heavy duty welding cycles. Each tip is marked with the part number and wire diameter for fast identification during gun maintenance in the field or shop.
Designed for use with 200 to 500 amp Tweco No. 5 MIG guns and MIG gun series accepting the 15H Heavy Duty contact tip in 0.062 inch wire diameter.
Contact tip replacement is performed by a qualified welder or MIG gun technician. Always power down the welding machine and allow the gun to cool before removing a worn tip. Use appropriate insulated gloves when handling components near the gun neck. Follow the gun manufacturer's torque guidance and inspect the gas diffuser for wear when replacing contact tips.
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