Overview
The Tweco 1140-1206 is a Professional Series heavy-duty contact tip engineered for industrial MIG welding applications. This 1/16″ (0.062″) contact tip is rated for welding currents up to 400 amperes and delivers reliable electrical conductivity and consistent arc performance in high-duty fabrication and manufacturing environments.
Key Features
- 122 DHP Copper Alloy Construction: Made from extruded or gun-drilled 122 DHP copper alloy for consistent surface finish and smooth inside diameter with +/-0.003 tolerance
- Heavy-Duty Rated: Rated for heavy duty welding applications up to 400 A
- Threaded Design: Threaded style ensures proper contact with a gas diffuser when installed to the MIG gun
- Easy Identification: Each contact tip is marked showing Part No. and wire diameter
- Superior Electrical Properties: Locks in place when twisted and offers better electrical conductivity with increased surface contact
Technical Specifications
- Manufacturer Part Number: 1140-1206
- Model Designation: 14H116
- Wire Diameter: 1/16″ (0.062″)
- Maximum Current Rating: 400 amps
- Thread Size: 1/4″-28 UNF-2A
- Nominal Inside Diameter (ID): 0.073″
- Outside Diameter (OD): 0.283″
- Material: 122 DHP Copper Alloy
- Length: 1.47″
- Tolerance: +/- 0.003″ (ID)
- Package Quantity: Bag of 17 tips
Typical Applications
- Heavy-duty metal fabrication and structural welding
- Manufacturing and production welding operations
- CNC and automated welding systems
- Industrial repair and maintenance welding
- Flux-cored and solid wire MIG welding
Compatibility & Replacements
Compatible With
- Tweco No.2, No.3 and No.4 MIG guns
- Tweco 14H Series heavy-duty MIG welding systems
- Lincoln KP2021-4 / S19392-4 style guns (equivalent)
- 200–400 amp MIG welding equipment
Replaces / Drop-In Replacement For
- 14H-116 contact tips (all equivalent model designations)
- Tweco OEM original contact tips for 14H series guns
- Previous-generation 1140-1206 consumables
Works With
- Solid MIG wire (ER70S-3, ER70S-6, etc.)
- Flux-cored arc welding (FCAW) wire
- Standard gas diffusers for Tweco MIG gun series
- Shielding gas applications (CO2, 75/25 Argon/CO2, Argon)
