Tweco 1230-1010 Mig Welding Nozzle 3/8 Inch Bore 450A

Product Description

The TWECO 1230-1010 is a Weldskill 23 Series MIG welding nozzle designed for use with standard gas diffusers in medium to heavy duty welding applications rated up to 450 amps. The nozzle measures 3.219 inches in length with a 3/8 inch (0.375 inch) bore and a 3/4 inch OD. It features a three-piece construction: a nozzle housing cut and formed from copper alloy tubing, a nozzle insert machined from solid brass, and a nozzle insulator constructed from G7 silicone material. The 9/16 inch-18 UNC-2B thread size matches conductor tube OD threads. Sold in packs of two. This nozzle is installed by qualified MIG welders and welding technicians as a consumable replacement part.

The 1230-1010 is suited for medium to heavy duty MIG welding environments where amperage demands reach up to 450 A. The silicone insulator provides the electrical isolation required between the nozzle and gas diffuser, eliminating the need for a separate insulator component. The recessed contact tip relationship of 0.125 to 0.156 inches is appropriate for applications requiring consistent shielding gas coverage and weld quality protection. The part number is roll-stamped on the outer surface, making identification straightforward during inventory and job-site use.

Key Features

• Three-piece design: copper alloy housing, solid brass insert, and G7 silicone insulator — no additional insulator required
• Rated for welding applications up to 450 amps
• 3/8 inch bore (0.375 inch) with 3/4 inch OD for standard gas diffuser compatibility
• 9/16 inch-18 UNC-2B internal thread matches conductor tube OD threads
• Recessed contact tip relationship of 0.125 to 0.156 inches
• Part number roll-stamped on outer surface for easy field identification
• Sold as a 2-pack

Compatibility

Designed for use with standard gas diffusers and conductor tube assemblies compatible with the TWECO 23 Series Weldskill nozzle platform. The nozzle insert threads onto the conductor tube assembly and slides over the metal spring component of the gas diffuser.

Installation Notes

Installation is performed by a qualified MIG welder or welding technician. Disconnect and power down the welding machine completely before removing or installing nozzle consumables. Thread the nozzle onto the conductor tube assembly by hand until snug, taking care not to cross-thread the UNC-2B internal threads. Inspect the silicone insulator for cracking or damage at each consumable change to maintain proper electrical isolation.

Technical Specifications

• Bore Size: 0.375 inches
• Nozzle Length: 3.219 inches
• Outer Diameter: 3/4 inch
• Thread Size: 9/16 inch-18 UNC-2B
• Recessed Contact Tip Relationship: 0.125 to 0.156 inches
• Amperage Rating: 450 amps
• Housing Material: Copper alloy
• Insert Material: Solid brass
• Insulator Material: G7 silicone
• Package Quantity: 2 per pack
• Weight: 0.2 pounds
• Series: Weldskill 23

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1230-1010