Tweco 1220-1100 Mig Nozzle Standard 3/8 Inch Bore 250A

Product Description

The TWECO 1220-1100 is a standard copper MIG welding nozzle designed for use with Tweco No. 2 MIG guns rated up to 250 amps. Built from 122 DHP copper alloy tubing, the nozzle housing is cut and formed for consistent conductivity and durability in light to medium duty welding applications. The bore measures 3/8 inch, and the recessed contact tip relationship is 0.125 to 0.156 inches, making it well suited for higher heat applications requiring longer electrical stick-out or situations where the nozzle may contact the work piece. The part number is roll-stamped on the outer surface for fast identification in the field. Sold in a pack of 2.

This nozzle fits into residential, commercial, and light industrial MIG welding setups where a Tweco No. 2 gun is in service. It slides over the standard nozzle insulator and can be adjusted to achieve the preferred contact tip and nozzle relationship. The recessed tip configuration is particularly suited for tack, spot, and stitch welding where the nozzle may touch the work piece or where longer electrical stick-out is needed to manage heat input. Licensed welding professionals and fabricators working in production or maintenance environments will find this nozzle a direct OEM-style replacement for worn front-end consumables.

Key Features

• 122 DHP copper alloy construction for high thermal and electrical conductivity
• 3/8 inch bore size compatible with Tweco No. 2 MIG guns up to 250A
• Recessed contact tip relationship of 0.125 to 0.156 inches for higher heat and longer stick-out applications
• Adjustable fit over standard nozzle insulator for customizable tip-to-nozzle relationship
• Part number roll-stamped on outer surface for easy field identification
• Sold as 2 per pack

Compatibility

Designed for use with Tweco No. 2 MIG guns rated up to 250 amps using a standard gas diffuser and standard nozzle insulator.

Installation Notes

Installation is performed by qualified welders or MIG gun service technicians. Power down and disconnect the welding machine before replacing front-end consumables. Slide the nozzle over the standard nozzle insulator and adjust the position to achieve the desired contact tip and nozzle relationship before resuming operation. Inspect the nozzle and contact tip regularly for spatter buildup, wear, or arcing damage that can affect weld quality and increase downtime.

Technical Specifications

• Bore Size: 3/8 inch
• Maximum Amperage: 250A
• Contact Tip Relationship (Recessed): 0.125 to 0.156 inches
• Material: 122 DHP Copper Alloy
• Length: 3.1 inches
• Width: 0.8 inches
• Weight: 0.14 pounds
• Pack Quantity: 2 per pack
• UPC: 608246056135

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1220-1100