Type schematic (not to scale) of a MIG nozzle, labelled with the printed size and nozzle mount cited in the specifications below; this part's outside diameter, bore and length are not in our sources.

Bernard N1C12Q MIG nozzle

Bernard N1C12Q Nozzle 1/2", Plated, Thread-On: size 1/2 in, nozzle mount Thread-On; fits 8 guns including Lincoln Magnum 250.

MIG nozzles · All Bernard part numbers

A cylindrical nickel-plated MIG welding nozzle with a blue insulator ring, lying on a white surface — A typical MIG nozzle — not necessarily this part. Photo: “Mig 1” by Victorvs, CC0, via Wikimedia Commons (resized).

Specifications

Size	1/2 in
Nozzle mount	Thread-On

All specifications: Single source printed by CM Industries; not corroborated

Fits

Guns

Lincoln Magnum 250
Tweco EL 450
Tweco ELC 250
Tweco ELC 350
Tweco ELC 450
Tweco Spraymaster 250
Tweco Spraymaster 350
Tweco Supra XT (EL consumables)

Related parts

Sources

Bernard/Tregaskiss — Conversion Series ConsumablesBernard and Tregaskiss (ITW Welding) · manufacturer product page · table 5 · supports fitment
CM Industries — Bernard® Replacement PartsCM Industries · cross-reference tool · row 413 · supports part identity, specifications