Tweco 1110-1203 Mig Contact Tip 0.040 Inch 25 Pack

Product Description

The TWECO 1110-1203 is a heavy-duty MIG contact tip designed for 0.040-inch wire diameter applications. Machined from 122 DHP copper alloy tubing using extrusion or gun-drilling, it delivers a consistent, smooth inside diameter held to a tolerance of plus or minus 0.003 inches. The M6 x 1.0-6g threaded body ensures solid, reliable contact with a gas diffuser when seated in the MIG gun. Thick-walled construction acts as a heat sink, drawing heat away from the arc source and extending service life. Each tip is marked with part number and wire diameter for quick field identification. Sold in packs of 25.

This contact tip is rated for heavy-duty welding applications up to 200 amps continuous and is compatible with 160-250 amp Tweco No. 1 MIG guns. The twist-lock design seats the tip without conventional threading concerns, increasing the electrical contact surface area between the tip and diffuser. A quarter-turn clockwise rotation exposes a new wear point when the original surface wears, effectively doubling usable tip life. This design suits production welding environments where downtime and consumable costs are a priority for welding professionals and fabrication shops running continuous operations.

Key Features

• 0.040-inch bore diameter with inside diameter tolerance of plus or minus 0.003 inches
• Machined from 122 DHP extruded or gun-drilled copper alloy tubing for consistent surface finish
• M6 x 1.0-6g threaded style for secure gas diffuser contact
• Twist-lock design increases electrical contact surface area for improved conductivity
• Thick-walled construction acts as a heat sink to manage arc-source heat
• Quarter-turn clockwise rotation reveals a second wear point, doubling tip service life
• Part number and wire diameter marked on each tip for easy identification

Compatibility

Compatible with 160-250 amp Tweco No. 1 MIG guns. Accepts slip-on or thread-on nozzle styles. Designed for use with Tweco-compatible gas diffusers requiring an M6 x 1.0-6g contact tip thread.

Installation Notes

Contact tip installation and replacement is performed by qualified welding technicians or maintenance personnel. Always power down the MIG welding system and allow the gun to cool before removing or seating a contact tip. Use the appropriate tip wrench or pliers to avoid damaging the tip or diffuser threads. Inspect the gas diffuser for wear or spatter buildup during each tip change to maintain consistent shielding gas flow.

Technical Specifications

• Wire Diameter: 0.040 inches
• Thread Size: M6 x 1.0-6g
• Tip Length: 1 inch
• Current Rating: Up to 200 amps (heavy duty)
• Material: 122 DHP copper alloy
• Inside Diameter Tolerance: plus or minus 0.003 inches
• Package Quantity: 25 per pack
• Weight: 0.02 pounds
• UPC: 608246050416

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1110-1203