We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brass MIG conversion adapter, 0.54 inch diameter, threaded connection

Bernard

Bernard MIG 0.54 in Conversion Adapter 1380012

SKU CH-Z1JE-KP9SE

Brass conversion adapter with 0.54 in diameter fits Tweco MIG guns including ELC 250, ELC 350 and Spray Master models

  • Size or dimensionsH=.540,W=1.12,D=.540
  • Main materialBrass
  • Product typeConversion Adapter
  • Brass construction resists corrosion for long service life
  • 54 in diameter fits Tweco-compatible MIG guns
  • Threaded connection enables quick, secure gun changes
  • Compatible with ELC 250, ELC 350, Spray Master 250 and 350 models
  • Supports MIG (GMAW) welding processes for versatile shop use

Bernard MIG 0.54 in Conversion Adapter

The Bernard 1380012 is a brass conversion adapter built for MIG welding guns. It fits Tweco-compatible models including ELC 250, ELC 350, Spray Master 250 and Spray Master 350. The threaded connection secures the adapter to the gun for GMAW processes. Welders using Centerfire series consumables will find this part matches their existing setup.

Threaded brass adapter limited to 0.54 inch diameter

The adapter measures 0.540 inch in overall diameter and 1.12 inch in width. Its brass construction suits standard MIG welding currents but is not rated for extreme amperages beyond the listed gun models. The fixed thread pitch only matches the specified Tweco and Bernard series guns. Guns outside the ELC and Spray Master 250/350 range will not connect.

0.54 inch overall diameter decides fit

The 0.54 inch overall diameter is the single dimension that determines whether this adapter seats correctly in the gun nozzle. If the gun tip recess requires a different bore size, the adapter will not seal or feed wire reliably. Check the gun manufacturer’s tip specification before ordering.

How it compares

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

Price $58.99
Typical for this category: the median of 1,978 items is $50.99.

Specifications

Product
Brand nameBernard
Product typeConversion Adapter
Size & build
Size or dimensionsH=.540,W=1.12,D=.540
Main materialBrass

Questions about this item

Which Bernard Centerfire conversion adapter fits my gun?

This adapter suits Tweco-compatible MIG guns including ELC 250, ELC 350, Spray Master 250, Spray Master 350 and the BTB, Clean Air, Dura-Flux, FILTAIR, Legacy Q-Gun and S-Gun series.

What does the 0.54 in diameter mean for my setup?

The 0.54 in overall diameter matches the gun’s contact-tip bore so the threaded connection seats correctly and feeds wire without binding.

How does the threaded brass connection hold up in MIG welding?

Brass resists spatter adhesion and the threaded joint stays secure under the heat and vibration of GMAW processes.

More in Welding Equipment & Positioners

Similar items