Tweco 1260-1609 Slip-on Copper Mig Nozzle 3/4 in Bore

Product Description

The TWECO 1260-1609 is a self-insulated slip-on copper MIG welding nozzle designed for use with standard gas diffusers on medium to heavy duty applications. The nozzle features a 3/4 inch bore, a 3.25 inch length, and a 0.875 inch outside diameter. It carries a current rating up to 450 amps, making it suited for demanding production welding environments. The three-piece construction integrates a nozzle housing, nozzle insert, and nozzle insulator without requiring a separate add-on insulator. The part number is rolled and stamped on the exterior surface for fast identification in the field. Sold in a pack of 2.

This nozzle is used in medium to heavy duty MIG welding applications where reliable gas coverage and electrical insulation from the gas diffuser are required. The recessed contact tip relationship of 0.125 to 0.156 inches makes it well suited for higher heat situations, tack welding, spot welding, stitch welding, and applications where the nozzle may contact the workpiece. It is installed by welding professionals and fabricators working on production lines, structural steel, and general manufacturing where consistent front-end consumable performance is critical.

Key Features

• Slip-on design slides over the metal spring on the gas diffuser — no separate insulator required
• Nozzle housing cut and formed from 122 DHP copper alloy tubing for high conductivity and durability
• Nozzle insert machined from solid brass and crimped in place for a secure, repeatable fit
• Nozzle insulator constructed from G7 silicone material to provide electrical isolation from the gas diffuser
• Part number rolled and stamped on the exterior surface for easy identification during changeouts
• Recessed contact tip relationship of 0.125 to 0.156 inches suits high heat, tack, spot, and stitch welding

Compatibility

Designed for use with standard gas diffusers in medium to heavy duty MIG welding guns rated up to 450 amps. Compatible with the TWECO EL24I gun configuration as indicated by the product series designation.

Installation Notes

Installation is performed by qualified welding technicians or maintenance personnel. Before replacing the nozzle, disconnect welding power and allow the gun neck and front-end components to cool completely. The slip-on nozzle seats over the metal spring of the gas diffuser — do not force or hammer the nozzle into place. Inspect the gas diffuser and contact tip condition whenever replacing the nozzle to maintain consistent arc performance and shielding gas coverage.

Technical Specifications

• Bore Size: 3/4 inch
• Nozzle Length: 3.25 inches
• Outside Diameter: 0.875 inches
• Current Rating: 450 amps
• Recessed Tip Relationship: 0.125 to 0.156 inches
• Housing Material: 122 DHP Copper Alloy
• Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Weight: 0.23 pounds
• Package Quantity: 2 per pack

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1609