Tweco 1230-1300 Mig Nozzle 3/8 Inch Bore 450 Amp 23 Series

Product Description

The TWECO 1230-1300 is a 23 Series MIG welding nozzle designed for use with Tweco No. 3 MIG guns rated up to 450 amps. The nozzle features a 3/8-inch (0.375 inch) bore and measures 3.25 inches in length. It is built with a 3-piece construction: a nozzle housing cut and formed from 122 DHP copper alloy tubing, a nozzle insert machined from solid brass, and a nozzle insulator constructed from G7 silicone material. The recessed contact tip relationship is 0.125 inches tapered. The part number is roll-stamped on the outer surface for quick identification in the field. Sold in a pack of 2. This nozzle is installed by certified welding technicians performing MIG welding in fabrication, manufacturing, and heavy-duty industrial applications.

The 1230-1300 is suited for heavy-duty MIG welding applications drawing up to 450 amps. It is designed for use with a standard gas diffuser and is compatible with Tweco No. 3 MIG guns. The nozzle insert is machined to allow internal threads that match the conductor tube OD threads, simplifying drop-in replacement during routine gun maintenance. The G7 silicone insulator provides the electrical isolation needed between the nozzle and gas diffuser without requiring a separate insulator component, making it a practical choice for high-amperage production welding environments.

Key Features

• 3/8-inch bore diameter with 0.125-inch recessed contact tip relationship for consistent gas coverage
• Rated for welding applications up to 450 amps
• 3-piece design: 122 DHP copper alloy housing, solid brass insert, and G7 silicone insulator
• Nozzle insert machined with internal threads to match conductor tube OD threads
• G7 silicone nozzle insulator provides electrical insulation from the gas diffuser without an additional insulator
• Part number roll-stamped on outer surface for easy field identification

Compatibility

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

Installation Notes

Installation and replacement should be performed by a qualified welding technician. Always power down the MIG gun and disconnect from the wire feeder before removing or installing consumables. Thread the nozzle onto the conductor tube by hand to avoid cross-threading the brass insert. Inspect the silicone insulator for cracking or heat degradation during each consumable change to maintain proper electrical isolation.

Technical Specifications

• Bore Diameter: 0.375 inches
• Nozzle Length: 3.25 inches
• Amperage Rating: 450 amps
• Contact Tip Relationship: 0.125 inches recessed tapered
• Housing Material: 122 DHP copper alloy
• Insert Material: Solid brass
• Insulator Material: G7 silicone
• Package Quantity: 2 per pack
• Weight: 0.17 pounds

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1230-1300