Tweco 1230-1302 Mig Welding Nozzle 3/8 in Bore 450A

Product Description

The TWECO 1230-1302 is a 23 Series MIG welding nozzle designed for use with Tweco No. 3 MIG guns rated up to 450 amps. Built from 122 DHP copper alloy tubing, this nozzle features a 3/8 inch (0.375 inch) bore and measures 3.25 inches in length. The contact tip relationship is tapered flush recess. A three-piece construction includes a formed copper alloy nozzle housing, a solid brass machined nozzle insert, and a G7 silicone nozzle insulator. The part number is roll-stamped on the outer surface for quick field identification. Sold as a 2-pack. Licensed welding professionals and MIG technicians install this nozzle as part of routine consumable replacement.

This nozzle is suited for heavy-duty MIG welding applications drawing up to 450 amps. It is designed for use with standard gas diffusers and is compatible with Tweco No. 3 MIG gun configurations. The nozzle insulator provides the electrical insulation required between the nozzle and gas diffuser, eliminating the need for a separate add-on insulator. The machined brass nozzle insert allows internal threads to be matched to conductor tube OD threads, ensuring a secure and repeatable fit in production and fabrication environments.

Key Features

• 3/8 inch bore diameter rated for up to 450 amp MIG welding applications
• Three-piece design: 122 DHP copper alloy housing, solid brass insert, G7 silicone insulator
• Nozzle insulator provides gas diffuser electrical isolation without a separate insulator component
• Brass nozzle insert machined to match conductor tube OD threads for consistent fit
• Part number roll-stamped on outer surface for fast identification during consumable changeouts
• Sold as a 2-pack per unit of measure

Compatibility

Designed for use with Tweco No. 3 MIG guns rated up to 450 amps and standard gas diffuser configurations in the Tweco 23 Series.

Installation Notes

Installation is performed by a qualified welding technician or MIG gun service professional. Disconnect and de-energize the MIG gun and shut off shielding gas supply before replacing consumables. Thread the nozzle onto the conductor tube by hand until snug, taking care not to cross-thread the brass insert. Inspect the nozzle insulator for cracking or spatter buildup at each consumable change interval.