Tweco-Compatible Nozzles

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Lincoln

Tweco

Manufacturer Model Number

Bore Size

Material

Length

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

14 Products

MIG Gun Nozzles

Recessed Nozzle

Direct shielding gas towards welds and protect contact tips from molten metal.

Recessed Nozzle—Recessed nozzles are the most common and work well in most welding applications. They let your wire stick out _1/2”-_3/4” from the contact tip, so the tip is away from the high heat of the arc and lasts longer. When your wire sticks out, there is also less of a chance it will melt and fuse to the contact tip.

	For Manufacturer Model Number	Bore Size		Each
Recessed Nozzle



	Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	3/8"	78375A647	000000


	Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	1/2"	78375A648	00000
	Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	5/8"	78375A649	00000
	Tweco	Fusion	3/8"	78375A561	00000
	Tweco	Fusion	1/2"	78375A665	00000
	Tweco	Fusion	5/8"	78375A563	00000
	Tweco	Fusion	3/4"	78375A564	00000
	Tweco	No. 3, No. 4	1/2"	78375A653	0000
	Tweco	No. 3, No. 4	5/8"	78375A654	0000
	Tweco	Spray Master 250	1/2"	78375A673	00000

MIG Gun Gas Diffusers

Conduct electricity to your contact tip and evenly distribute shielding gas for high-quality welds. These diffusers reduce turbulence so the gas stays where you need it, which shields the weld and keeps it strong by preventing oxidation and pitting.

For Mfr.	For Mfr. Model No.	Material	Lg.		Each
Lincoln Tweco	Magnum 200, Magnum 250L No. 2	Brass	2"	90573A170	000000
Lincoln Tweco	Magnum 300, Magnum 400 No. 3, No. 4	Brass	1 1/4"	90573A180	0000
Tweco	Fusion Pro 7W	Thermoset	1 1/8"	90573A110	0000
Tweco	Mini No. 1	Brass	1 23/32"	90573A190	0000