Tweco 1240-1111 Mig Nozzle 1/2 Inch Bore Recessed Tip

Product Description

The TWECO 1240-1111 is a Short Stop copper MIG welding nozzle designed for use with Tweco No. 4 MIG guns rated up to 450 amps. Constructed from 122 DHP copper alloy tubing, this nozzle measures 3.48 inches in length with a 1/2-inch bore and a 0.875-inch outer diameter. The recessed contact tip relationship of 0.125 to 0.156 inches makes it well suited for higher-heat applications requiring longer electrical stick-out. The part number is roll-stamped on the outer surface for fast field identification. Sold as 2 per pack, this nozzle is a direct-fit component for technicians performing medium to heavy duty MIG welding work.

This nozzle is intended for medium to heavy duty MIG welding applications drawing up to 450 amps. The recessed tip geometry is appropriate for tack, spot, and stitch welding scenarios where the nozzle may contact the work piece, or where longer electrical stick-out is required to manage heat input. It slides over the standard nozzle insulator, part number 34A (stock number 1340-1100), and is compatible with the standard gas diffuser used on Tweco No. 4 MIG guns. Welding professionals working in fabrication, structural, or heavy manufacturing environments will find this nozzle a reliable consumable for demanding cycles.

Key Features

• 122 DHP copper alloy construction for thermal conductivity and durability in high-amperage applications
• Recessed tip design with 0.125 to 0.156 inch tip recess for higher heat and longer stick-out requirements
• 1/2-inch bore with 0.875-inch OD for proper gas shielding coverage
• Part number roll-stamped on outer surface for quick identification during consumable changes
• Fits over standard nozzle insulator part 34A (stock number 1340-1100)
• Sold as 2 per pack

Compatibility

Designed for use with Tweco No. 4 MIG guns rated up to 450 amps using a standard gas diffuser and standard nozzle insulator part 34A (stock number 1340-1100).

Installation Notes

Installation should be performed by a qualified welder or welding equipment technician with the power source switched off and the gun cable de-energized before handling front-end consumables. Slide the nozzle over the nozzle insulator until fully seated and confirm the bore is centered over the contact tip before resuming operation. Inspect the nozzle regularly for spatter buildup and replace when bore erosion affects shielding gas coverage. Follow the gun manufacturer's maintenance guidelines and applicable ANSI Z49.1 safety practices for welding equipment service.

Technical Specifications

• Bore Size: 1/2 inch
• Nozzle Length: 3.48 inches
• Outer Diameter: 0.875 inches
• Tip Recess: 0.125 to 0.156 inches
• Maximum Amperage: 450 amps
• Material: 122 DHP Copper Alloy
• Package Weight: 0.19 pounds
• Quantity per Pack: 2
• UPC: 608246057224

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1240-1111