Tweco 1260-1430 Mig Nozzle 3/4 in Bore 600A Coarse Thread

Product Description

The TWECO 1260-1430 is a coarse-threaded copper MIG welding nozzle designed for use with standard gas diffusers on medium to heavy duty MIG welding systems. Machined from a solid 145 tellurium copper alloy bar, the nozzle delivers consistent dimensional stability and efficient heat dissipation across demanding weld cycles. The bore measures 3/4 inch with an outside diameter of 1.057 inches and a nozzle length of 1.46 inches. Rated up to 600 amps, it is suited for applications where thermal load is high. The recessed contact tip relationship of 0.125 to 0.156 inches makes it appropriate for longer electrical stick-out situations or when the nozzle may contact the workpiece. Sold in a 2-piece pack. Licensed welding technicians and MIG welding professionals install this nozzle as a front-end consumable replacement.

This nozzle is designed for medium to heavy duty MIG welding applications rated up to 600 amps. The recessed tip geometry is particularly suited for higher heat welding situations, including tack, spot, and stitch welding, as well as scenarios where the nozzle may contact the workpiece. The two-piece design separates the nozzle housing from the nozzle insulator, allowing each component to be replaced independently. The nozzle insulator threads onto the conductor tube while the nozzle housing threads onto the insulator. This design reduces overall consumable replacement cost during high-volume production or repair welding operations.

Key Features

• Machined from solid 145 tellurium copper alloy bar for consistent dimensional stability and heat dissipation
• Two-piece design: nozzle housing and nozzle insulator are separate, replaceable components
• Recessed contact tip relationship of 0.125 to 0.156 inches suits higher heat and longer stick-out applications
• Rated up to 600 amps for medium to heavy duty MIG welding
• Part number roll-stamped on exterior surface for easy field identification
• Sold as 2 per pack

Compatibility

Designed as an OEM-style replacement nozzle for TWECO 26CT series MIG torch setups using a standard gas diffuser configuration. Nozzle housing and nozzle insulator are sold separately and must be ordered individually if only one component requires replacement.

Installation Notes

This consumable is replaced by welding technicians during routine MIG torch maintenance. Ensure the welding machine is powered down and the torch has cooled completely before removing or installing front-end consumables. The nozzle housing threads onto the nozzle insulator, which in turn threads onto the conductor tube — do not overtighten, as this may damage the insulator. Follow the torch manufacturer's assembly sequence to ensure proper insulation and gas shielding coverage.

Technical Specifications

• Bore Size: 3/4 inch
• Nozzle Length: 1.46 inches
• Outside Diameter: 1.057 inches
• Contact Tip Recess: 0.125 to 0.156 inches
• Current Rating: 600 amps
• Thread Type: Coarse thread
• Material: 145 tellurium copper alloy
• Design: 2-piece (nozzle housing and nozzle insulator)
• Package Quantity: 2 per pack
• Package Weight: 0.13 pounds
• UPC: 608246058948

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1430