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Copper welding nozzle, tapered slip-on design, 3/8 inch bore

TREGASKISS

TREGASKISS 401-4-38 Welding Nozzle 3/8" Slip-On Tapered Standard Duty

SKU CH-EDYQ-KSRC2

A slip-on tapered copper nozzle with a 3/8-inch bore for MIG welding guns, compatible with Tough Lock and TGX series

  • Product typeTools
  • Tapered shape directs shielding gas efficiently on MIG welds
  • 3/8 inch bore fits standard wire sizes for consistent flow
  • Slip-on connection enables quick nozzle changes without tools
  • Self-insulated copper body resists spatter buildup during fabrication
  • Compatible with TOUGH LOCK series guns for versatile shop use

TREGASKISS 401-4-38 MIG Welding Nozzle

This TREGASKISS nozzle fits TOUGH LOCK and compatible MIG guns used in automotive, fabrication and manufacturing. The 3/8 inch bore and tapered copper design directs shielding gas efficiently for standard-duty GMAW work. It slips onto gas diffusers 404-26 or 404-32 with a flush tip relationship. Buyers needing a larger bore or heavy-duty rating should look elsewhere.

Thermal Performance and Power Draw

Copper construction conducts heat away from the weld zone during normal MIG operation. The self-insulated body limits heat transfer to the gun handle without external insulation sleeves. Standard-duty rating suits typical fabrication cycles without excessive thermal buildup. No active cooling or water connections are required for this air-cooled component.

Build Quality and Daily Use

Slip-on connection allows quick nozzle changes between jobs without tools. The flush tip position keeps the contact tip protected inside the bore for consistent wire feeding. Compatible with BTB, Clean Air, G1, G2, Robotic CA3, S-Gun, T-Gun, TA3, TGX and ThruArm G2 series guns. Welders using thread-on diffusers or non-TOUGH LOCK systems cannot use this nozzle.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 75% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameTREGASKISS
Product typeTools

Questions about this item

How do I install the 401-4-38 nozzle and which step is most often missed?

Slide the tapered copper nozzle onto the compatible TOUGH LOCK diffuser until it seats flush with the contact tip. The step most often missed is confirming the diffuser is a 404-26 or 404-32 before installation.

What maintenance or replacement will the 401-4-38 nozzle need later?

Replace the copper nozzle when spatter buildup narrows the 3/8 in bore or the tapered tip deforms, as standard-duty copper wears faster than heavy-duty versions under MIG welding heat.

What limit appears first on the 401-4-38 nozzle during sustained MIG welding?

The standard-duty copper reaches its heat limit first, causing spatter to adhere and the 3/8 in bore to restrict gas flow before the slip-on connection or self-insulation fails.

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