Tweco 1260-1286 Mig Welding Nozzle 3/4 Inch Bore 600A

Product Description

The TWECO 1260-1286 is a heavy-duty slip-on MIG welding nozzle built for the HD26 series torch. It features a 3-piece construction: a nozzle housing cut-formed from red brass alloy 230, a nozzle insert machined from solid brass and crimped in place to slide over the gas diffuser spring, and a G7 silicone nozzle insulator that provides electrical isolation from the gas diffuser. The outer diameter measures 1.117 inches and the bore inner diameter is 0.75 inches. Rated for welding applications up to 600 amperes, this nozzle ships as an individual unit and is air-cooled in operation. Licensed welders and professional fabricators install and service this component.

This nozzle is designed for heavy-duty welding applications requiring sustained high-amperage output. The HD26 series is used in industrial and fabrication environments where continuous duty cycles and thermal demands exceed the capacity of standard MIG nozzles. The 3-piece design eliminates the need for a separate external insulator, reducing component count during torch assembly and maintenance. It is suited for production welding, structural fabrication, and other applications drawing up to 600 amps.

Key Features

• 3-piece nozzle design: red brass alloy 230 housing, solid brass machined insert, and G7 silicone insulator
• Nozzle insert is crimped in place to allow smooth sliding over the gas diffuser metal spring
• G7 silicone insulator provides electrical isolation without requiring a separate add-on insulator
• Rated for heavy-duty welding up to 600 amperes
• Part number roll-stamped on outer surface for quick field identification
• Air-cooled design; slip-on mounting style

Compatibility

Designed as an OEM-style replacement nozzle for TWECO HD26 series MIG welding torches rated for heavy-duty applications up to 600 amperes.

Installation Notes

Installation and replacement of MIG welding nozzles should be performed by a qualified welder or welding equipment technician. Disconnect and de-energize the welding machine and allow the torch to cool completely before handling the nozzle. Slip the nozzle onto the gas diffuser spring with firm, even pressure until fully seated. Inspect the nozzle insulator for cracking or carbon tracking at each service interval and replace if damage is found.

Technical Specifications

• Series: HD26
• Nozzle Type: Slip-On
Duty Rating: Heavy Duty
• Amperage Rating: 600 amps
• Cooling Method: Air-Cooled
• Outer Diameter: 1.117 inches
• Bore Inner Diameter: 0.75 inches
• Housing Material: Red Brass Alloy 230
• Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Package Weight: 0.41 pounds
• Length: 1.2 inches
• Width: 3.3 inches
• Height: 1.2 inches
• Sold As: Each
• UPC: 608246331546

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1286