Tweco 1260-1604 Mig Welding Nozzle 3/4 Inch Copper

Product Description

The TWECO 1260-1604 is a copper alloy MIG welding nozzle designed for use with standard EL-series gas diffusers. Built for light-to-medium duty welding applications up to 250 amps, this nozzle uses a 3-piece construction that eliminates the need for a separate insulator. The assembly includes 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 nozzle insert is crimped in place, allowing the assembly to slide over the metal spring integral to the gas diffuser. The part number is roll-stamped on the exterior surface for quick field identification. Sold in a pack of 2.

This nozzle is suited for residential and light commercial MIG welding setups where consistent shielding gas flow and electrical insulation from the diffuser are required. The threaded interface mates with standard EL-series gas diffusers. The 3/4-inch bore size accommodates standard gas coverage for applications up to 250 A. Typical install scenarios include fabrication shops, maintenance welding, and field repair work where reliable front-end consumables reduce downtime. Both flush and recessed tip configurations benefit from this nozzle design depending on stick-out and joint access requirements.

Key Features

• 3-piece design eliminates the need for a separate insulator, simplifying assembly and replacement
• Nozzle housing cut and formed from 122 DHP copper alloy tubing for thermal conductivity and durability
• Nozzle insert machined from solid brass and crimped in place for secure fit over the gas diffuser spring
• G7 silicone nozzle insulator provides required electrical isolation from the gas diffuser
• Part number roll-stamped on exterior surface for fast identification in the field
• Rated for welding applications up to 250 amps
• Sold as a 2-piece pack

Compatibility

Designed for use with standard EL-series gas diffusers. Features threads that mate with the standard EL gas diffuser interface. Compatible with light-to-medium duty MIG welding systems operating up to 250 A.

Installation Notes

Installation is performed by licensed welding professionals or qualified technicians. Always power down the welding system and disconnect from the power source before replacing front-end consumables. Thread the nozzle onto the EL gas diffuser by hand until fully seated, ensuring the nozzle insert slides properly over the diffuser spring. Inspect the silicone insulator for damage during each consumable change to maintain proper electrical isolation.

Technical Specifications

• Bore Size: 3/4 inches
• Amperage Rating: 250 amps
• Nozzle Housing Material: 122 DHP Copper Alloy
• Nozzle Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Design: 3-Piece, No Additional Insulator Required
• Pack Quantity: 2 per pack
• Length: 3.1 inches
• Width: 0.9 inches
• Height: 0.9 inches
• Weight: 0.17 pounds
• UPC: 608246148496

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1604