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Two copper welding nozzles, straight threaded bore 3/4 in, heavy duty MIG, pack of 2

Tweco

Tweco Series 25 Nozzle 3/4 in Bore Copper PK2

SKU CH-4G25-3HPXN

Standard copper nozzle with 3/4 inch bore for Series 25 MIG guns, rated to 500 A and sold in pairs

  • Size/Dimensions0.075
  • MaterialCopper
  • TypeStandard
  • Heavy-duty MIG performance up to 500 A
  • Copper construction resists heat and spatter
  • Threaded connection fits Series 25 and WeldSkill WM guns
  • 1/8 in recess optimises gas coverage
  • Pack of two nozzles reduces downtime

Series 25 Copper Nozzle 3/4 in Bore

These Tweco Series 25 nozzles feature a 3/4 inch bore and copper construction for MIG welding guns. They are designed for heavy-duty applications with a current range up to 500 amps. The standard straight shape provides a 1/8 inch tip recess for consistent gas coverage. Supplied as a pack of two for workshop convenience.

For MIG Welders Using Tweco Series 25 Guns

Suits operators running Tweco WS25CT or WeldSkill WM series guns who need replacement copper nozzles. The threaded connection ensures secure fitment with the WS35CT insulator. Not intended for TIG or stick welding processes, or for guns requiring a different bore diameter or insulator style. Buyers needing flux-cored specific tips should verify compatibility separately.

3/4 Inch Bore Determines Gas Flow Coverage

The 3/4 inch bore diameter directly controls the shielding gas envelope around the weld pool. A bore too wide for the application wastes gas and may cause porosity; a bore too narrow restricts flow and risks contamination. Match this specification to your welding procedure and wire diameter for proper protection.

Highlights

  • Heavy-duty MIG performance up to 500 A
  • Copper construction resists heat and spatter
  • Threaded connection fits Series 25 and WeldSkill WM guns
  • 1/8 in recess optimises gas coverage
  • Pack of two nozzles reduces downtime

Specifications

BrandTweco
Size/Dimensions0.075
MaterialCopper
TypeStandard

Questions about this item

What thread size does the Tweco Series 25 nozzle need to fit the torch?

The nozzle uses a threaded connection designed for Tweco WS25CT and WeldSkill WM series torches; it threads directly onto the compatible insulator.

Which step is most often missed when installing this copper nozzle?

Users often forget to fit the WS35CT insulator (stock 1350-1425) before threading the nozzle, which sets the required 1/8 in tip recess.

When should the copper nozzle be replaced during heavy-duty MIG welding?

Replace the nozzle when the bore shows erosion, spatter buildup restricts gas flow, or the copper tip loses conductivity after extended use up to 500 A.

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