MIG Welding Gun Tips | McMaster-Carr

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60 Products

MIG Gun Contact Tips

Attach these tips to MIG guns to guide welding wire and electric current to the weld site.

Tapered Tip—Tapered tips are good for welding on edges and in tight spaces, such as corners.

	For Mfr. Model No.	Choose a Wire Diameter	Pkg. Qty.		Pkg.
Standard Tip



	Bernard	EZ Feed 200, EZ Feed 300, EZ Feed 350, EZ Feed 400	0.030" , 0.035"	10	78375A64	000000
	Hobart Miller	Trek 180 M-10, M-15, M-25, M-40, M-100, M-150	0.023"/0.025" , 0.030" , 0.035" , 0.045"	10	78375A544	00000
	Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	0.023"/0.025" , 0.030" , 0.035"	10	78375A542	00000
	Lincoln Tweco	Magnum 200, Magnum 250L, Magnum 300, Magnum 400 No. 2, No. 3, No. 4	0.023"/0.025" , 0.030" , 0.035" , 0.040" , 0.045" , 0.052" , 0.063"	10	78375A543	00000
	Miller	MDX 100, MDX 250	0.030" , 0.035"	10	78375A78	00000
	Miller	Spoolmatic, XR Pistol	0.030" , 0.035"	10	78375A84	00000
	Tregaskiss	T30, T40	0.030" , 0.035" , 0.045"	10	78375A545	00000
	Tweco	Fusion	0.023"/0.025" , 0.030" , 0.035" , 0.040" , 0.045"	10	78375A551	00000
	Tweco	Fusion Pro 7W	0.035"	10	78375A771	00000
	Tweco	Mini No. 1, No. 1	0.040"	10	78375A609	00000


	Tweco	Mini No. 1, No. 1	0.045"	10	78375A61	00000
	Tweco	Spray Master 250	0.030" , 0.035"	10	78375A63	00000
	Tweco	Velocity2 Spray Master 250, 350	0.030" , 0.035"	10	78375A75	00000


	Tapered Tip



			Hobart Miller	Trek 180 M-10, M-15, M-25, M-40, M-100, M-150	0.035" , 0.045"	10	78375A548	00000
			Lincoln	Magnum Pro 100SG	0.030" , 0.035"	5	78375A62	0000
			Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	0.025" , 0.030" , 0.035" , 0.045"	10	78375A559	00000
			Lincoln Tweco	Magnum 200, Magnum 250L, Magnum 300, Magnum 400 No. 2, No. 3, No. 4	0.025" , 0.030" , 0.035" , 0.045"	10	78375A549	00000

MIG Gun Nozzles

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.

Tapered Nozzle—Tapered nozzles are good for welding in tight spaces, such as corners, and on edges.

Flush Nozzle—Flush nozzles let your wire stick out _1/4”-_1/2” from the contact tip, so the tip is close to your workpiece. These nozzles are good for welding thin materials under low voltages, decreasing the risk of burning through your workpiece.

	For Manufacturer Model Number	Bore Size		Each
Recessed Nozzle



	Lincoln	Magnum 200, Magnum 250L	1/2"	78375A19	00000
	Lincoln	Magnum 300, Magnum 400	3/4"	78375A21	00000
	Lincoln Tweco	Magnum 100L Mini No. 1, No. 1	3/8"	78375A647	00000
	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
	Lincoln Tweco	Magnum 200, Magnum 250L No. 2	1/2"	78375A851	0000
	Lincoln Tweco	Magnum 200, Magnum 250L No. 2	5/8"	78375A874	0000
	Lincoln Tweco	Magnum 300, Magnum 400 No. 3, No. 4	1/2"	78375A861	00000
	Lincoln Tweco	Magnum 300, Magnum 400 No. 3, No. 4	5/8"	78375A862	00000
	Miller	M-25, M-40	1/2"	78375A686	00000


	Miller	M-25, M-40	5/8"	78375A687	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	No. 3, No. 4	3/4"	78375A26	0000
	Tweco	Spray Master 250	1/2"	78375A673	00000
	Tweco	Velocity2 Spray Master 250, Velocity2 Spray Master 350	1/2"	78375A12	00000


	Tapered Nozzle



			Bernard	200, 300, Q150	1/2"	78375A676	00000
			Miller	M-10, M-15, M-100, M-150	3/8"	78375A25	00000
			Miller	M-25, M-40	3/8"	78375A22	00000
			Miller	Spoolmatic, XR Pistol	1/2"	78375A16	00000


			Flush Nozzle



					Bernard	200, 300, Q150	5/8"	78375A675	00000
					Miller	M-25, M-40	1/2"	78375A23	00000
					Miller	M-25, M-40	5/8"	78375A24	00000
					Miller	MDX 100	1/2"	78375A15	00000
					Miller	MDX 250	1/2"	78375A17	00000
					Miller Hobart	M-10, M-15, M-100, M-150 Trek 180	1/2"	78375A685	00000
					Tweco	Fusion	1/2"	78375A11	00000
					Tweco	Fusion Pro 7W	5/8"	78375A14	0000
					Tweco	Velocity2 Spray Master 250, Velocity2 Spray Master 350	1/2"	78375A13	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
Bernard	EZ Feed 200, EZ Feed 300, EZ Feed 350, EZ Feed 400	Brass	2 1/16"	90573A160	000000
Lincoln	Magnum Pro 100L, Magnum Pro 100SG	Copper	1 1/2"	90573A120	00000
Lincoln Tweco	Magnum 200, Magnum 250L No. 2	Brass	2"	90573A170	00000
Lincoln Tweco	Magnum 300, Magnum 400 No. 3, No. 4	Brass	1 1/4"	90573A180	0000
Miller	MDX 100	Brass	1 3/4"	90573A140	00000
Miller	MDX 250	Brass	2"	90573A150	00000
Miller	Spoolmatic, XR Pistol	Brass	2 1/8"	90573A130	00000
Tregaskiss	T30, T40	Brass	1 1/4"	90573A210	00000
Tweco	Fusion Pro 7W	Thermoset	1 1/8"	90573A110	0000
Tweco	Mini No. 1	Brass	1 23/32"	90573A190	0000