Tweco 1150-1204 Mig Contact Tip 0.045 in 1.97 in 25 Pack

Product Description

The TWECO 1150-1204 is a 15 Series heavy-duty MIG contact tip designed for wire feeders running 0.045-inch wire. It is machined from extruded or gun-drilled 122 DHP copper alloy tubing, which produces a consistent, smooth inside diameter with a tolerance held to plus or minus 0.003 inches. The nominal inside diameter is 0.054 inches and the outside diameter is 0.345 inches. At 1.97 inches in length with a 5/16-18 UNC-2A thread, this tip is rated for heavy-duty welding applications up to 500 amps. It is sold in packs of 25 and installed by welders and MIG gun technicians servicing high-amperage wire welding equipment.

This contact tip is intended for use with 200-500 amp Tweco No. 5 MIG guns and compatible MIG gun series requiring a threaded-style contact tip. It fits applications where slip-on or thread-on nozzle styles are used. The tip works in heavy industrial and fabrication environments where sustained high-amperage output demands reliable current transfer and extended consumable life. The twist-lock design and dual wear-point feature make it well suited for production welding operations where downtime for tip changes must be minimized.

Key Features

• Machined from 122 DHP copper alloy for consistent inside diameter surface and excellent electrical conductivity
• Inside diameter tolerance held to plus or minus 0.003 inches for reliable wire feed and arc stability
• 5/16-18 UNC-2A thread ensures secure seating and proper contact with gas diffuser
• Twist-lock design locks tip in place and increases contact surface area between tip and diffuser
• Quarter-turn clockwise rotation reveals a second wear point, effectively doubling tip service life
• Thick-walled construction acts as a heat sink, drawing heat away from the arc source
• Each tip is marked with part number and wire diameter for fast, accurate identification

Compatibility

Designed for use with Tweco No. 5 MIG guns rated 200-500 amps and compatible MIG gun series accepting a 5/16-18 UNC-2A threaded contact tip for 0.045-inch wire diameter.

Installation Notes

Contact tips are installed and serviced by qualified welders or MIG gun technicians. Always power down the welding machine and allow the gun to cool before replacing contact tips. Thread the tip in by hand until snug, then engage the twist-lock by rotating clockwise — do not use excessive force. Inspect the gas diffuser for wear or spatter buildup before installing a new tip, as a damaged diffuser will shorten tip life.

Technical Specifications

• Wire Diameter: 0.045 inches
• Nominal Bore (ID): 0.054 inches
• Outside Diameter (OD): 0.345 inches
• Length: 1.97 inches
• Thread Size: 5/16-18 UNC-2A
• Current Rating: Up to 500 amps
• Material: 122 DHP copper alloy
• ID Tolerance: plus or minus 0.003 inches
• Pack Quantity: 25 per pack
• Weight: 0.05 pounds

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1150-1204