Tweco 1210-1343 Mig Nozzle 180A 3/8 in Bore Air Cooled

Product Description

The TWECO 1210-1343 is a 3-piece, air-cooled, slip-on MIG welding nozzle rated for up to 180 amperes and designed for light- to medium-duty welding applications. The nozzle housing is cut and formed from 122 DHP copper alloy tubing for efficient heat dissipation and durability. The nozzle insert is machined from solid brass with internal threads matched to the gas diffuser, and the nozzle insulator is molded from G7 silicone material, providing the required electrical isolation without needing a separate external insulator. The part number is roll-stamped on the outside for fast field identification. This nozzle is sold individually and installed by welding technicians and MIG welding maintenance personnel.

The 1210-1343 fits into the TWECO Weldskill 21 Series gun platform and is suited for light- to medium-duty MIG welding in fabrication shops, maintenance and repair operations, and production welding environments. The 3/8 inch bore diameter accommodates standard wire diameters common in these duty cycles. The tapered nozzle profile provides good gas coverage at the weld pool. The nozzle threads directly onto the gas diffuser, and the self-insulated 3-piece design eliminates the need for a separate insulator component during assembly.

Key Features

• Rated up to 180 amperes for light- to medium-duty MIG welding
• 3-piece design: 122 DHP copper alloy housing, solid brass insert, G7 silicone insulator
• 3/8 inch bore diameter with 1/8 inch to 5/32 inch tip tapered recess
• Self-insulated construction — no additional external insulator required
• Threads directly onto the gas diffuser for secure, repeatable seating
• Part number roll-stamped on exterior for quick identification in the field

Compatibility

Designed for use with the TWECO Weldskill 21 Series air-cooled MIG welding guns as a slip-on nozzle replacement.

Installation Notes

Installation is performed by welding technicians or equipment maintenance personnel. Always de-energize and allow the MIG gun to cool completely before removing or installing the nozzle. Thread the nozzle onto the gas diffuser by hand until fully seated — do not over-tighten. Inspect the G7 silicone insulator for cracks or damage before each reinstallation to ensure proper electrical isolation.

Technical Specifications

• Current Rating: 180 A
• Bore Diameter: 3/8 inch
• Tip Tapered Recess: 1/8 inch to 5/32 inch
• Cooling Method: Air Cooled
• Attachment Style: Slip-On
• Housing Material: 122 DHP Copper Alloy
• Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Length: 2.2 inches
• Width: 0.8 inches
• Weight: 0.13 pounds
• Sold As: Each
• UPC: 608246322919

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1210-1343