Bernard 403-20-45-25 Mig Welder Nozzle Tip Insulator

Product Description

The BERNARD 403-20-45-25 is a MIG welder nozzle, contact tip, and insulator assembly designed for use in gas metal arc welding (GMAW) applications. This three-component set plays a critical role in shielding gas delivery, electrical current transfer to the wire electrode, and thermal insulation between the gun body and nozzle. Welding professionals rely on properly matched nozzle, tip, and insulator components to maintain arc stability, reduce spatter buildup, and extend consumable service life. This part is installed by certified welders and maintenance technicians working on MIG welding equipment.

This consumable set is suited for professional MIG welding operations in fabrication shops, manufacturing facilities, and field maintenance environments. The nozzle directs shielding gas coverage around the weld pool, the contact tip guides and energizes the wire, and the insulator prevents unwanted conductivity between components. Replacing all three together is standard practice when servicing a MIG gun to restore full performance. The BERNARD 403-20-45-25 is intended for trade and industrial use where consistent weld quality is required.

Key Features

• Three-component consumable set: nozzle, contact tip, and insulator in one part number
• Contact tip transfers welding current directly to the wire electrode for consistent arc initiation
• Nozzle channels shielding gas evenly around the weld zone to prevent oxidation
• Insulator isolates the nozzle from the gun body to reduce heat transfer and prevent short circuits
• Manufactured in the United States

Compatibility

Designed as an OEM-style replacement consumable for compatible BERNARD MIG welding guns. Verify gun model and thread specifications before ordering to confirm fitment.

Installation Notes

Installation should be performed by a qualified welder or welding equipment technician. Always disconnect the welding machine from its power source before replacing nozzle, tip, or insulator components. Use appropriate hand tools to avoid cross-threading the contact tip and to seat the nozzle securely. Follow the gun manufacturer's service guidelines and applicable AWS or workplace safety standards during consumable replacement.

Technical Specifications

• UNSPSC Code: 23271711
• Country of Origin: United States

Standard Information

• Brand: BERNARD
• Manufacturer Part Number: 403-20-45-25