Tweco 1260-1285 Mig Welding Nozzle 5/8 Inch Bore HD26

Product Description

The TWECO 1260-1285 is a heavy-duty slip-on MIG welding nozzle engineered for the HD26 Series torch. It features a 5/8-inch bore (ID) and an outer diameter of 1.117 inches, with an overall length of 3.29 inches. The nozzle uses a three-piece construction: a nozzle housing cut-formed from red brass alloy 230, a solid brass machined insert crimped in place to slide over the gas diffuser spring, and a G7 silicone insulator that provides electrical isolation from the gas diffuser. Licensed welding technicians and MIG equipment service professionals install this nozzle as a consumable replacement on HD26 Series torch assemblies.

This nozzle is designed for heavy-duty MIG welding environments where sustained high amperage output is required. Rated for use in applications up to 600 amperes, it is suited for industrial and fabrication settings where torch consumables experience rapid thermal cycling and mechanical wear. The air-cooled design makes it appropriate for torch configurations that rely on shielding gas flow for nozzle cooling rather than a water-cooled torch body. The part number is roll-stamped on the exterior surface for quick identification during consumable changeover on the job.

Key Features

• Three-piece nozzle design: housing, insert, and insulator function as a self-contained assembly without requiring a separate additional insulator
• Nozzle housing cut-formed from red brass alloy 230 for thermal durability
• Solid brass nozzle insert machined and crimped in place for secure fitment over the gas diffuser spring
• G7 silicone nozzle insulator provides reliable electrical isolation from the gas diffuser
• Rated for heavy-duty welding applications up to 600 amperes
• Part number roll-stamped on exterior surface for fast identification during consumable changes

Compatibility

Designed as an OEM-style replacement consumable for TWECO HD26 Series MIG welding torches used in heavy-duty applications up to 600 amperes.

Installation Notes

Installation is performed by qualified welding equipment technicians or MIG torch service personnel. Power down and de-energize the welding system before replacing torch consumables. The slip-on design allows the nozzle to slide over the gas diffuser spring — ensure the diffuser is clean and undamaged before seating the replacement nozzle. Inspect the G7 silicone insulator for cracking or heat damage at each consumable change interval.

Technical Specifications

• Bore Diameter (ID): 5/8 inches
• Outer Diameter (OD): 1.117 inches
• Length: 3.29 inches
• Amperage Rating: Up to 600 amps
• Nozzle Type: Slip-On, Heavy Duty
• Cooling Method: Air-Cooled
• Housing Material: Red Brass Alloy 230
• Insert Material: Solid Brass
• Insulator Material: G7 Silicone
• Weight: 0.41 pounds
• Series: HD26

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1260-1285