Tweco 1210-1300 Mig Nozzle 3/8 Inch Bore 180A 2-pack

Product Description

The TWECO 1210-1300 is a self-insulated, thread-on copper MIG welding nozzle designed for use with Tweco No. 1 MIG guns rated up to 180 amps. The nozzle features a 3/8 inch bore, measures 2.224 inches in length with a 3/4 inch OD, and is constructed from 122 DHP copper alloy tubing for reliable performance in higher-heat welding environments. Its 3-piece design integrates a copper alloy nozzle housing, a solid brass nozzle insert with machined internal threads, and a G7 silicone nozzle insulator that provides electrical separation from the gas diffuser without requiring an additional insulator component. The part number is rolled-stamped on the outer surface for quick field identification. Sold as a 2-pack.

This nozzle is suited for light to medium duty MIG welding applications drawing up to 180 amps. The recessed contact tip relationship of 0.125 to 0.156 inches makes it a practical choice for higher-heat work requiring longer electrical stick-out, as well as tack, spot, and stitch welding passes where the nozzle may contact the workpiece. It threads directly onto a standard gas diffuser compatible with Tweco No. 1 MIG gun front-end assemblies. The M11-1.5-6H thread size ensures a secure, repeatable fit during gun assembly and front-end maintenance.

Key Features

• 122 DHP copper alloy housing cut and formed from tubing for high-heat durability
• Solid brass nozzle insert with machined internal threads to match gas diffuser
• G7 silicone nozzle insulator provides electrical insulation without an additional insulator part
• 3/8 inch bore with 3/4 inch OD and 2.224 inch length
• Recessed tip relationship of 0.125 to 0.156 inches for longer stick-out applications
• Part number rolled-stamped on outer surface for easy identification during inventory and install

Compatibility

Designed for use with Tweco No. 1 MIG guns rated up to 180 amps using a standard gas diffuser with M11-1.5-6H thread sizing.

Installation Notes

Installation is performed by welding technicians during front-end assembly or routine consumable replacement on MIG guns. Always de-energize and disconnect the MIG gun from the wire feeder before removing or installing nozzle components. Thread the nozzle onto the gas diffuser by hand first to avoid cross-threading the brass insert, then snug with appropriate pliers — do not over-tighten, as this can crack the silicone insulator. Inspect the nozzle insulator and insert for spatter buildup or cracking during each consumable change interval.

Technical Specifications

• Bore Size: 3/8 inch
• Nozzle Length: 2.224 inches
• Outer Diameter: 3/4 inch
• Maximum Amperage: 180 amps
• Thread Size: M11-1.5-6H
• Tip Recess: 0.125 to 0.156 inches
• Housing Material: 122 DHP Copper Alloy
• Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Package Weight: 0.11 pounds
• Quantity per Pack: 2
• UPC: 608246055794

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1210-1300