Insulator, Coarse Thread, Copper, 400 A, For Best Welds®, Tweco® Style No 4 MIG Guns

Best Welds MIG Gun Shock Washers and Insulators

Product Attributes:

  • Industry part number easily recognizable
  • Meets or exceeds OEM quality and performance
  • Material = Copper
  • Style = Tweco® Style
  • Type = MIG Gun Insulator; Coarse Thread
  • Used With = Best Welds® 400 A; Tweco® No 4 MIG Guns

WARNING: This product can expose you to LEAD, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to