Best Welds 900-402-7 Shock Washer 350A Tregaskiss Mig Guns

Product Description

The BEST WELDS 900-402-7 is an aluminum insulator shock washer designed for use with 350-amp MIG welding guns built in the Tregaskiss style. Shock washers serve as insulating components between the contact tip holder and the gun neck, absorbing mechanical vibration and preventing electrical shorts caused by metal-to-metal contact. This standard-type washer is the correct replacement for technicians and welding maintenance professionals servicing high-amperage semi-automatic MIG guns in production or fabrication environments. The aluminum construction keeps weight low while providing adequate insulation for the 350 A rating of the guns it serves.

This washer is suited for welding shops, manufacturing facilities, and field maintenance operations where Tregaskiss-style 350 A MIG guns are in regular service. It is a consumable wear component that is replaced during routine gun maintenance or whenever inspection reveals cracking, deformation, or loss of insulating integrity. Welding equipment technicians and certified welders performing their own gun maintenance are the primary installers.

Key Features

• Standard shock washer type providing insulation and vibration absorption at the gun neck interface
• Rated for use with 350 A MIG guns
• Aluminum construction for lightweight, durable performance
• Designed to Tregaskiss-style gun geometry for correct fitment
• Special-order availability for shops requiring consistent consumable sourcing

Compatibility

Designed for use with Tregaskiss 350 A MIG guns using the standard Tregaskiss-style neck and contact tip holder configuration.

Installation Notes

Always disconnect and de-energize the welding power source before disassembling any MIG gun components. Remove the contact tip, diffuser, and nozzle to access the shock washer at the gun neck. Inspect mating surfaces for carbon buildup or damage before installing the replacement washer. Follow the gun manufacturer's assembly sequence to avoid cross-threading or over-torquing the tip holder.

Technical Specifications

• Type: Shock Washer, Standard
• Style: Tregaskiss Style
• Amperage Rating: 350 A
• Material: Aluminum
• Country of Origin: CN

Standard Information

• Brand: BEST WELDS
• Manufacturer Part Number: 900-402-7