Tweco 1260-1629 Mig Welding Nozzle 5/8 Inch Bore 200A

Product Description

The TWECO 1260-1629 is a coarse-threaded MIG welding nozzle designed for use with standard EL-series gas diffusers in medium and heavy-duty welding applications rated up to 200 amps. The nozzle measures 3.138 inches in length with a 5/8-inch (0.625-inch) bore and a 1.062-inch outer diameter. It features a 3-piece construction consisting of 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 part number is roll-stamped on the external surface for quick identification in the field. Sold in a pack of 2.

This nozzle is suited for medium and heavy-duty MIG welding environments where reliable gas coverage and electrical insulation are critical. The recessed contact tip relationship of 0.125 to 0.156 inches makes it well-suited for higher-heat applications, tack welding, spot welding, and stitch welding where the nozzle may contact the workpiece. The nozzle insert is crimped in place to allow the nozzle to slide over the metal spring integrated into the gas diffuser, providing a secure fit without requiring an additional insulator component. Compatible with standard EL-series gas diffusers.

Key Features

• 3-piece design eliminates the need for a separate insulator component
• Nozzle housing formed from 122 DHP copper alloy tubing for durability under high-heat conditions
• Solid brass nozzle insert machined to match internal threads of the standard EL gas diffuser
• G7 silicone nozzle insulator provides required electrical insulation from the gas diffuser
• Part number roll-stamped on exterior surface for fast identification
• Recessed tip geometry supports higher heat, tack, spot, and stitch welding applications

Compatibility

Designed for use with standard EL-series gas diffusers. Threads are matched to the standard EL gas diffuser. Sold as 2 per pack.

Installation Notes

Installation should be performed by a qualified welding technician or MIG welder operator. Disconnect and de-energize the welding system before replacing front-end consumables. Ensure the nozzle insert is fully seated over the gas diffuser spring before initiating a weld. Do not overtighten the threaded connection, as this may damage the brass insert or silicone insulator.

Technical Specifications

• Bore Size: 0.625 inches
• Nozzle Length: 3.138 inches
• Outer Diameter: 1.062 inches
• Maximum Amperage: 200 A
• Recessed Tip Relationship: 0.125 to 0.156 inches
• Nozzle Housing Material: 122 DHP Copper Alloy
• Nozzle Insert Material: Solid Brass
• Nozzle Insulator Material: G7 Silicone
• Thread Type: Coarse Thread
• Package Quantity: 2 per pack
• Weight: 0.36 pounds

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1629