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Two copper conical welding nozzles with threaded connection

Miller Enterprises

Miller Enterprises 130831 Welding Nozzle 300/400A Bore 5/8 In PK2

SKU CH-CNFM-DX8A2 MPN 130831

A pair of copper conical nozzles with 5/8 in bore for 300/400 A FasTip MIG guns

  • MaterialCopper
  • TypeScrew On (300/400A)
  • Copper construction ensures excellent electrical conductivity and heat dissipation
  • Screw-on design allows quick and secure nozzle changes during welding
  • Fits Miller FasTip series guns including Spoolmatic 15 and 30 models
  • 5/8 inch bore diameter suits 300 to 400 amp applications
  • Conical shape provides focused gas coverage for consistent weld quality

Miller FasTip Nozzle 5/8 In Bore

This copper nozzle is built for 300 to 400 amp MIG guns using the FasTip contact-tip system. It fits Spoolmatic 15, Spoolmatic 30, XR-Aluma-Pro and XR-Pistol torches. The pack contains two standard-duty conical tips for high-volume wire feeding.

Replaces Worn FasTip Conical Tips

Swap this in when the bore erodes or spatter buildup narrows the gas envelope. The jump is worth it when wire feed becomes erratic or porosity appears on aluminium and steel welds. Each nozzle threads directly onto compatible FasTip insulators sold separately.

Threads Onto FasTip Insulator Bodies

The 5/8 inch bore matches the FasTip series geometry used on the listed Spoolmatic and XR guns. Copper construction dissipates heat during long passes. No insulator is included, so verify the existing insulator matches the FasTip thread before installation.

Highlights

  • Copper construction ensures excellent electrical conductivity and heat dissipation
  • Screw-on design allows quick and secure nozzle changes during welding
  • Fits Miller FasTip series guns including Spoolmatic 15 and 30 models
  • 5/8 inch bore diameter suits 300 to 400 amp applications
  • Conical shape provides focused gas coverage for consistent weld quality

Specifications

BrandMiller Electric
MaterialCopper
TypeScrew On (300/400A)

Questions about this item

What bore diameter and thread type does the Miller 130831 nozzle use for the gun tip?

The nozzle has a 5/8 in bore and a threaded screw-on connection that matches the FasTip contact tip series.

Which gun models accept this nozzle, and what common step is missed during fitting?

It fits Spoolmatic 15, Spoolmatic 30, XR-Aluma-Pro and XR-Pistol guns; the separate insulator must be installed before threading the nozzle on.

When should the copper nozzle be replaced, and what matching tip series is required?

Replace the nozzle when the bore erodes or spatter blocks gas flow, and use FasTip contact tips for correct thread engagement.

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