Tweco 1260-1628 Mig Welding Nozzle 3/4 Inch Bore 250A

Product Description

The TWECO 1260-1628 is a coarse-threaded brass MIG welding nozzle designed for use with standard EL gas diffusers. It features a 3/4-inch bore and measures 3.183 inches in length with a 0.875-inch outer diameter. The nozzle uses a 3-piece construction that eliminates the need for a separate insulator. The housing is cut and formed from 122 DHP copper alloy tubing. The insert is machined from solid brass with internal threads matched to fit the EL gas diffuser. The insulator is constructed from G7 silicone material. Rated for light to medium duty MIG welding applications up to 250 amps. Sold in a 2-pack.

This nozzle threads directly onto standard EL gas diffusers and is suited for light to medium duty MIG welding up to 250 A. The recessed contact tip relationship of 0.125 to 0.156 inches makes it appropriate for higher-heat applications where longer electrical stick-out is needed, as well as tack, spot, and stitch welding scenarios where the nozzle may contact the workpiece. It is a practical replacement nozzle for production and job-site welding environments where consistent shielding gas coverage and easy part identification are priorities.

Key Features

• 3/4-inch bore with 0.875-inch OD and 3.183-inch length
• Rated for light to medium duty welding up to 250 amps
• 3-piece design: no additional insulator required
• Housing formed from 122 DHP copper alloy tubing for durability and heat resistance
• Insert machined from solid brass with internal threads matched to EL gas diffuser
• G7 silicone insulator provides electrical isolation from the gas diffuser
• Part number rolled-stamped on exterior surface for easy field identification

Compatibility

Designed to thread onto standard EL gas diffusers. Compatible with light to medium duty MIG welding setups rated up to 250 amps.

Installation Notes

This nozzle is installed by welding technicians as part of the front-end consumable assembly on MIG welding guns. Power down and de-energize the welding system before replacing front-end components. Thread the nozzle onto the EL gas diffuser by hand until snug; avoid over-tightening, which can damage the internal threads. Inspect the nozzle insulator and insert for wear or spatter buildup during routine consumable checks.

Technical Specifications

• Bore Size: 3/4 inch
• Outer Diameter: 0.875 inches
• Length: 3.183 inches
• Recessed Tip Relationship: 0.125 to 0.156 inches
• Maximum Amperage: 250 A
• Housing Material: 122 DHP copper alloy
• Insert Material: Solid brass
• Insulator Material: G7 silicone
• Thread Type: Coarse thread, thread-on
• Weight: 0.18 pounds
• Sold As: 2 per pack

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1628