Tweco 1260-1666 Mig Nozzle 1/2 Inch Bore Flush Tip 2 Pack

Product Description

The TWECO 1260-1666 is a heavy-duty coarse-threaded copper MIG welding nozzle rated for applications up to 200 amps. The nozzle features a 1/2 inch (0.50 inch) bore and a flush contact tip relationship, making it well-suited for shorter electrical stick-out and tighter arc lengths. Its 3-piece construction consists of a nozzle housing cut and formed from 122 DHP copper alloy tubing, a nozzle insert machined from solid brass with internal threads machined to match the gas diffuser, and a nozzle insulator constructed from G7 silicone material. Sold as a pack of 2, this nozzle is installed by professional welders and MIG welding technicians in medium and heavy-duty fabrication environments.

This nozzle is designed for use with a standard EL gas diffuser. The flush tip configuration is best suited for applications where a shorter electrical stick-out is used, which can result in shorter and tighter arc lengths by bringing the contact tip closer to the work piece. Typical install scenarios include medium and heavy-duty MIG welding operations up to 200 amps in fabrication shops, industrial maintenance settings, and structural welding environments. The part number is rolled and stamped on the external surface for quick field identification during consumable changes.

Key Features

• Rated for medium and heavy-duty MIG welding applications up to 200 amps
• 1/2 inch bore size with flush contact tip relationship for shorter arc lengths
• 3-piece design eliminates the need for an additional insulator
• Nozzle housing formed from 122 DHP copper alloy tubing for heat dissipation and dimensional stability
• Nozzle insert machined from solid brass with internal threads matched to the EL gas diffuser
• G7 silicone nozzle insulator provides electrical insulation from the gas diffuser
• Part number rolled stamped on exterior surface for easy identification

Compatibility

Designed to thread onto a standard EL gas diffuser. Intended for use in medium and heavy-duty MIG welding torch setups requiring a coarse-threaded copper nozzle with a 1/2 inch bore.

Installation Notes

Installation and consumable replacement should be performed by a qualified MIG welding technician. Always power down the welding machine and allow the torch to cool completely before removing or installing nozzle components. Inspect the gas diffuser threads prior to installation to ensure proper thread engagement and a gas-tight fit. Follow applicable AWS safety standards and the torch manufacturer guidelines during service.

Technical Specifications

• Bore Size: 0.50 inches
• Maximum Current Rating: 200 amps
• Tip Relationship: Flush
• Thread Type: Coarse threaded
• Nozzle Housing Material: 122 DHP copper alloy tubing
• Nozzle Insert Material: Solid brass
• Nozzle Insulator Material: G7 silicone
• Length: 3.1 inches
• Width: 1 inch
• Weight: 0.21 pounds
• Quantity per Pack: 2
• UPC: 608246169583

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1666