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TREGASKISS 404-20 slip-on retaining head, single taper, TOUGH LOCK series

TREGASKISS

TREGASKISS 404-20 Retaining Head Slip-On Single Taper TOUGH LOCK

SKU CH-HJMD-548N4

Slip-on retaining head with single taper TOUGH LOCK design fits Bernard, Tweco and Magnum MIG guns for heavy-duty welding

  • TypeTools
  • Slip-on single taper enables quick nozzle changes
  • TOUGH LOCK series compatibility fits Magnum 300, 400 and Spray Master 350, 450
  • Heavy-duty construction withstands demanding MIG welding tasks
  • 9/16 in.-18 thread ensures secure connection to compatible guns
  • Bernard Tough Gun cross-compatibility expands equipment options

TREGASKISS 404-20 retaining head for MIG guns

This TREGASKISS retaining head uses a slip-on single taper design from the TOUGH LOCK series. It fits Bernard Tough Gun and compatible Magnum 300, Magnum 400, Spray Master 350, Spray Master 450, Tweco #3, Tweco #4 and WeldSkill 400 models. The part is built for heavy-duty MIG welding (GMAW) applications. It secures the gas diffuser during operation.

Check gun model and connection thread before

Verify that your MIG gun matches the listed compatible series and models. The connection type is slip-on with a 9/16 in.-18 thread specification. Confirm the existing gas diffuser number matches 404-20 for proper fit. This item is restricted from sale in certain states.

Heavy-duty construction with slip-on mounting

The retaining head is rated for heavy-duty welding processes. Slip-on mounting allows quick installation and removal without tools. The single taper design aligns the diffuser securely during high-amperage use. TOUGH LOCK series components are engineered for durability in industrial environments.

Highlights

  • Slip-on single taper enables quick nozzle changes
  • TOUGH LOCK series compatibility fits Magnum 300, 400 and Spray Master 350, 450
  • Heavy-duty construction withstands demanding MIG welding tasks
  • 9/16 in.-18 thread ensures secure connection to compatible guns
  • Bernard Tough Gun cross-compatibility expands equipment options

Specifications

BrandTREGASKISS
TypeTools

Questions about this item

What is included with the 404-20 retaining head and what must be purchased separately?

The package contains the slip-on single-taper retaining head only; a compatible TOUGH LOCK gas diffuser, contact tip and nozzle must be bought separately.

Which TOUGH LOCK retaining head version should I choose for a Magnum 400 or Tweco #4 gun?

Select the 404-20 slip-on single-taper head; it fits Magnum 300, 400, Spray Master 350, 450, Tweco #3, #4 and WeldSkill 400 models.

How does the 9/16 in.-18 slip-on connection affect installation on a MIG gun?

The 9/16 in.-18 slip-on thread lets the head slide onto the diffuser without tools, giving a secure heavy-duty fit for MIG welding.

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