Tweco 1140-1171 Mig Contact Tip 0.062 in 1.5 in 25 Pack

Product Description

The TWECO 1140-1171 is a Weldskill series MIG contact tip designed for 0.062 inch (1/16 inch) wire diameter applications. Machined from 122 DHP copper alloy tubing, the tip delivers consistent electrical conductivity and a smooth inside diameter surface with a tolerance held to plus or minus 0.003 inches. At 1.5 inches in length with a 0.073 inch nominal bore and a 1/4 inch-28 UNF-2A threaded base, it installs directly into compatible MIG gun gas diffusers. Rated for standard welding applications up to 400 amps, this tip is sold in a pack of 25. Each tip is marked with the part number and wire diameter for fast identification at the bench or in the field.

This contact tip is suited for standard MIG welding operations in fabrication shops, manufacturing facilities, and field welding environments. The threaded style design ensures consistent seating against the gas diffuser, maintaining stable arc performance across extended production runs. The 122 DHP copper alloy construction supports reliable current transfer at amperages up to 400 A, making it appropriate for both short-run repair work and higher-volume production welding on steel and similar base metals.

Key Features

• 0.062 inch wire size with 0.073 inch nominal bore for precise wire guidance
• Machined from 122 DHP copper alloy tubing for consistent inside diameter surface finish
• Inside diameter tolerance held to plus or minus 0.003 inches
• 1/4 inch-28 UNF-2A threaded style for secure gas diffuser contact
• Rated up to 400 amps for standard welding applications
• Part number and wire diameter marked on each tip for easy identification
• Sold as 25 per pack

Compatibility

Designed as an OEM-style threaded contact tip replacement for MIG guns and torches accepting 1/4 inch-28 UNF-2A threaded tips rated for use up to 400 amps.

Installation Notes

Contact tips are installed and serviced by welding technicians as part of routine MIG gun consumable maintenance. Power down the welder and allow the gun to cool before removing a spent tip. Use an appropriate tip wrench to avoid deforming the soft copper threads during installation. Inspect the gas diffuser for spatter buildup or thread damage before installing a new tip to ensure proper seating and gas flow.

Technical Specifications

• Wire Diameter: 0.062 inches
• Nominal Bore (ID): 0.073 inches
• Outside Diameter: 0.25 inches
• Length: 1.5 inches
• Thread Size: 1/4 inch-28 UNF-2A
• Current Rating: 400 amps maximum
• ID Tolerance: plus or minus 0.003 inches
• Material: 122 DHP Copper Alloy
• Weight: 0.02 pounds
• Quantity per Pack: 25

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1140-1171