Welding Cable Supplies | McMaster-Carr

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84 Products

About Wire and Cable

Compare wire vs. cable and choose the right option based on gauge, number of conductors, insulation, and current rating.

Welding Cable

Image of Specification. Front orientation. Contains Border. Welding Cable. Flexible, Stranded Wire Class M.

This cable withstands abrasion, oil, and the rough conditions found in welding applications.

Stranded Wire Class K—Class K cable is for general purpose welding applications. It bends and stays in the position that you bend it.

Stranded Wire Class M—Class M cable is more flexible and durable than Class K cable.

										Per Ft.
	AWG	Stranded Wire Class	Wire Strand Count	Outer Jacket Material	Temp., ° F	Flammability Rating	Choose an Outer Jacket Color	Choose a Length, ft.		1-249	250-Up
600V AC







				Bend and Stay

				8	K	182/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A86	00000	00000


				6	K	260/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A91	0000	0000
				4	K	364/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A92	0000	0000
				2	K	624/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A93	0000	0000
				1	K	767/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A94	0000	0000
				1/0	K	975/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A95	0000	0000
				2/0	K	1,196/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A96	0000	0000
				3/0	K	1,547/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A97	00000	0000
				4/0	K	1,950/30	EPDM	-55 to 220	UL 2556 VW-1	Black, Red	10, 20, 25, 30, 50, 100, 250	7940A98	00000	00000


				600V AC/600V DC







								Flexible

								2	M	1,482/34	EPDM	-55 to 220	UL 2556 VW-1	Orange	10, 20, 25, 30, 50, 100, 250	7940A77	0000	0000


								1	M	1,843/34	EPDM	-55 to 220	UL 2556 VW-1	Orange	10, 20, 25, 30, 50, 100, 250	7940A78	0000	0000
								1/0	M	2,337/34	EPDM	-55 to 220	UL 2556 VW-1	Orange	10, 20, 25, 30, 50, 100, 250	7940A79	0000	0000
								2/0	M	2,886/34	EPDM	-55 to 220	UL 2556 VW-1	Orange	10, 20, 25, 30, 50, 100, 250	7940A81	00000	0000

Grounding Clamps for Welding

Designed specifically for use with welding circuits.

C-Clamp


Heavy Duty	No Twist	No Twist ABS Plastic Handle

C-clamps tighten with a handle. Use these multipurpose tools for strong clamping in nearly any application.

Heavy Duty—Heavy duty clamps have a strong frame that won’t spread when holding big workpieces, such as large diameter pipe and thick plate.

No Twist—No-twist clamps have jaws that move in unison to apply even pressure and prevent twisting while securing your workpiece. They’re also known as cantilever clamps.

Copper Connection—Clamps that are copper prevent weld spatter from sticking.

ABS Plastic Handle—Clamps with an ABS plastic handle have a cushioned grip that’s comfortable to hold.

Copper-Plated Steel Screw—Clamps that have copper-plated components prevent weld spatter from sticking.

	For No. of Wires	For Wire Ga.	Max. Cable Outlet Dia.	Jaw Opening	Connection Material	Electrical Connection	Cable Connection	Features		Each
Standard



	300	—	1/0, 2/0	0.56"	2"	Bronze	Grounding Clamp	Welding	Copper-Plated Steel Screw	7840A12	000000


	300	—	1/0, 2/0	0.56"	2"	Bronze	Grounding Clamp	Screw Terminal	Copper-Plated Steel Screw	7840A13	00000
	600	—	3/0, 4/0	0.63"	2"	Bronze	Grounding Clamp	Welding	Copper-Plated Steel Screw	7840A15	00000
	600	—	3/0, 4/0	0.63"	2"	Bronze	Grounding Clamp	Screw Terminal	Copper-Plated Steel Screw	7840A14	00000


	Heavy Duty



			600	1	3/0, 4/0	0.66"	3 3/8"	Bronze	Grounding Clamp	Welding	Copper-Plated Steel Screw	7840A16	000000


			600	1	3/0, 4/0	0.66"	3 3/8"	Bronze	Grounding Clamp	Screw Terminal	Copper-Plated Steel Screw	7840A11	000000


			No Twist



					400	—	—	—	4 1/2"	Copper	Grounding Clamp	Stud Terminal	—	7840A19	00000


					400	—	—	—	4 1/2"	Copper	Grounding Clamp	Stud Terminal	ABS Plastic Handle	7840A21	00000

Plier Clamp


Nonconductive

Plier clamps are good for light duty applications that require mobility, such as building a fence.

Copper Connection—Clamps that are copper prevent weld spatter from sticking.

Nonconductive—Nonconductive clamps won’t transmit electricity, meaning you can touch them while the power is on without disrupting the circuit.

Cable Support—Cable supports prevent cable strand breakage.

For Wire Ga.	Jaw Opening	Connection Material	Electrical Connection	Cable Connection	Stud Lg.	Features		Each



180	1/0	2"	Copper	Grounding Clamp	Stud Terminal	1/2"	Nonconductive, Cable Support	7838A13	000000


200	1/0	1 1/2"	Steel	Grounding Clamp	Stud Terminal	3/4"	Cable Support	7838A14	00000
300	1/0, 2/0	2"	Steel	Grounding Clamp	Stud Terminal	3/4"	Cable Support	7838A11	00000
500	3/0, 4/0	2"	Steel	Grounding Clamp	Stud Terminal	3/4"	Braided Copper Shunt, Cable Support	7838A12	00000

Spring Clamp


Standard	Flat Jaw

Spring clamps have an extended jaw that eases clamping. Both jaws carry current.

Flat Jaw—Flat-jaw clamps grip flat surfaces especially well. They have a larger contact area with the workpiece than standard spring clamps, so electricity flows more easily, but their jaw openings aren’t as large.

Copper Connection—Clamps that are copper prevent weld spatter from sticking.

Cable Support—Cable supports prevent cable strand breakage.

	For Wire Ga.	Max. Cable Outlet Dia.	Jaw Opening	Connection Material	Electrical Connection	Cable Connection	Features		Each
Standard



	200	6, 5, 4, 3, 2, 1, 1/0	0.51"	1"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin, Cable Support	7991A4	000000


	300	6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0	0.54"	1 1/2"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin, Cable Support	7991A5	00000
	500	6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0	0.58"	2"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin, Cable Support	7991A6	00000


	Flat Jaw



			200	6, 5, 4, 3, 2, 1, 1/0	—	5/8"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin	7840A22	00000


			300	6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0	—	1"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin	7840A23	00000
			500	6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0	—	1 1/4"	Copper	Grounding Clamp	Screw Terminal	Copper Hinge Pin	7840A24	000000

Magnetic Clamp


Magnetic Clamp	Magnetic Clamp with On/Off Switch	Multiple-Angle Magnetic Clamp with On/Off Switch

Magnetic clamps stick to metal surfaces on your workpiece, even oddly-shaped and sized ones. Compared to traditional clamps, they require less manual effort and are less limited by the amount of space available on your workpiece. However, you can’t use them on aluminum or nonferrous material, and their hold is usually less powerful than traditional clamps.

Multiple Angle—Multiple-angle clamps let you hold more than one workpiece at a time, at different angles.

Copper Connection—Clamps that are copper prevent weld spatter from sticking.

On/Off Switch—Clamps with an on/off switch let you engage and disengage the magnet for easy placement and removal of your workpiece.

	Connection Material	Electrical Connection	Cable Connection	Dia.	Ht.	Wd.	Handle Lg.	Stud Lg.	Features		Each
Standard



	200	Steel	Grounding Clamp	Stud Terminal	—	2 3/4"	1 13/16"	—	1 1/4"	On/Off Switch	7992A11	000000


	250	Brass	Grounding Clamp	Stud Terminal	3 1/2"	—	—	5 1/8"	2"	—	7992A1	00000
	300	Steel	Grounding Clamp	Stud Terminal	—	2 3/4"	1 15/16"	—	1 1/4"	On/Off Switch	7992A6	00000
	800	Copper	Grounding Clamp	Stud Terminal	3 1/2"	—	—	5 1/8"	2"	—	7992A5	00000
	800	Steel	Grounding Clamp	Stud Terminal	—	5"	3"	—	1 1/4"	On/Off Switch	7992A8	000000


	Multiple Angle



			300	Steel	Grounding Clamp	Stud Terminal	—	3 3/4"	1 15/16"	—	—	On/Off Switch	7992A12	000000

Welding Cable Connectors

Deliver power to welding cable. Plugs lock into sockets with a cam action that pulls the two pieces together tightly. The housing resists oil.

Plugs

Current, amp	Wire Connection	For Wire Ga.	For Cable OD	Housing Connection Method	OD	Lg.	Color	Temp. Range, ° F		Each
250	Screw Terminal	4, 3, 2, 1, 1/0	0.2" to 0.5"	Push In	1.3"	5.9"	Black	-50 to 350	7841A14	000000
350	Screw Terminal	1/0, 2/0	0.32" to 0.56"	Push In	1.4"	5.9"	Black	-50 to 350	7841A16	00000
500	Screw Terminal	3/0, 4/0	0.41" to 0.63"	Push In	1.4"	5.9"	Black	-50 to 350	7841A22	00000

Lug Adapters

Use lug adapters to connect welding plugs to the stud of a power supply.

	Sleeve Material	Color	OD	For Screw Size	Max. Temp., ° F		Each
Straight



	250	Bronze	Black	1.1"	1/2"	475	7854A1	000000


	500	Bronze	Black	1.2"	1/2"	475	7854A3	00000


	45° Elbow



			250	Bronze	Black	1.1"	1/2"	475	7854A2	00000


			500	Bronze	Black	1.2"	1/2"	475	7854A4	00000

Sockets

Current, amp	Wire Connection	For Wire Ga.	For Cable OD	Housing Connection Method	OD	Lg.	Color	Temp. Range, ° F		Each
250	Screw Terminal	4, 3, 2, 1, 1/0	0.2" to 0.5"	Push In	1.3"	4.9"	Black	-50 to 350	7841A15	000000
350	Screw Terminal	1/0, 2/0	0.32" to 0.56"	Push In	1.4"	4.9"	Black	-50 to 350	7841A21	00000
500	Screw Terminal	3/0, 4/0	0.41" to 0.63"	Push In	1.4"	4.9"	Black	-50 to 350	7841A23	00000

Solder and Compression Welding Lug Assortments

Keep a variety of welding lug sizes on hand. Either solder these welding lugs into place, or use a hammer-on crimper (not included) for a secure connection.

	Includes	For Wire Material	For Wire Construction	Terminal Material	Max. Temp., ° F	Max. Voltage, V DC		Each
1 Hole—For 1 Wire



	68	6 AWG for 1/4", 5/16" and 3/8" Screws, 4 AWG for 1/4", 5/16", 3/8" and 1/2" Screws, 2 AWG, 1/0-4/0 for 3/8" and 1/2" Screws; Plastic Compartmented Case	Copper	Stranded	Copper	190	48	4189N11	000000

Welding Lug Covers

Prevent accidental contact with other connections.

For Wire Ga.	Material	For Lug Shape		Each
6, 4, 2, 1, 1/0, 2/0, 3/0, 4/0	Vinyl Plastic	Straight	7828A11	000000

Abrasion-Resistant Extension Cords

Our most durable extension cords. Built to NEC Article 400 standards for extra-hard service, these cords resist wear that could expose conductors and compromise safety. Their thick jacket protects against scrapes from rough surfaces.

Power Indicator—A light indicates that power is flowing through the cord.

Ground-Presence Indicator—A light indicates that the cord is properly grounded.

	Cable Designation	For Use Outdoors	Light Indicator Type	Certification		Each
NEMA 6-50 90° Elbow Plug × Socket—250V AC







	Black

	25	8	40	STW	Yes	Power and Ground Presence	C-ETL Listed, ETL Listed	5653N11	0000000


	50	8	40	STW	Yes	Power and Ground Presence	C-ETL Listed, ETL Listed	5653N12	000000

Hammer-On Welding Lugs

Slide these welding lugs onto cable and strike them with your hammer to create a durable connection.

	For Wire Construction	For Wire Material	Lg.	Wd.	Ht.	Thk.	Terminal Material	Max. Temp.	Max. Voltage		Each
Straight







	1 Hole—For 1 Wire

	1, 1/0, 2/0	1/2"	0.500"	Stranded	Aluminum, Copper	2.875"	1"	0.75"	0.15"	Copper	Not Rated	Not Rated	69575K3	00000


	3/0, 4/0	1/2"	0.500"	Stranded	Aluminum, Copper	3.156"	1.156"	0.906"	0.18"	Copper	Not Rated	Not Rated	69575K4	00000

Welding Lug Covers

For Wire Ga.	Material		Each
6, 4, 2, 1, 1/0, 2/0, 3/0, 4/0	Vinyl Plastic	7828A11	000000

Ready-to-Use Welding Cords with Male Connector and Electrode Holder

Image of Product. Front orientation. Welding Cords. Male, Connector Orifice, Electrode Holder Connection.

The male quick-action connector on these cords gives your welding set-up greater versatility by allowing quick changes.

Cable AWG	AWG	Welding Process	No. of Wires	Outer Jacket Material		10 ft. Long	25 ft. Long	50 ft. Long
1/0/1	1/0	Stick	1	EPDM	7940A35	0000000	0000000	0000000
2/0/1	2/0	Stick	1	EPDM	7940A36	000000	000000	000000

Ready-to-Use Welding Cords with Male Connector and Female Connector

Image of Product. Front orientation. Welding Cords. Female, Connector Orifice, Male.

The quick-action connectors on these cords give your welding set-up greater versatility by allowing quick changes.

Cable AWG	AWG	Welding Process	No. of Wires	Outer Jacket Material		10 ft. Long	25 ft. Long	50 ft. Long
1/0/1	1/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A32	0000000	0000000	0000000
2/0/1	2/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A34	000000	000000	000000

Tight-Hold Compression Lugs

These prevent pullout better than other compression lugs, and they give you more options for attaching the wire. To attach with solder, heat the enclosed solder onto your stranded wire. This bonds the wire to the lug for a secure hold and a continuous, ultra-conductive metallic connection. If sharp bends and tugs aren't a concern, you can skip the soldering and use a compression tool to squeeze the barrel tightly and evenly onto the wire. Compression lugs are a step up from set screw lugs when you need a physically strong connection, though set screw lugs attach to even larger wire.

	For Screw Size	Lg.	Wd.	Ht.	Thk.	For Wire Construction	For Wire Material	Terminal Material	Max. Temp.	Max. Voltage		Each
Solder and Compression Connection



	8 to 6	5/16"	1.39"	0.539"	0.380"	0.08"	Stranded	Copper	Copper	Not Rated	Not Rated	7913A41	00000


	6 to 4	5/16"	1.6"	0.622"	0.450"	0.1"	Stranded	Copper	Copper	Not Rated	Not Rated	7913A42	0000

Welding Cable Connector Sets

Each set includes one plug and one socket. Plugs lock into sockets with a cam action that pulls the two pieces together tightly. The housing resists oil.

					Mated Housing
Current, amp	Wire Connection	For Wire Ga.	For Cable OD	Housing Connection Method	Dia.	Lg.	Color	Temp. Range, ° F		Each
250	Screw Terminal	4, 3, 2, 1, 1/0	0.2" to 0.5"	Push In	1.3"	9.7"	Black	-50 to 350	7841A11	000000
350	Screw Terminal	1/0, 2/0	0.32" to 0.56"	Push In	1.4"	9.8"	Black	-50 to 350	7841A12	00000
500	Screw Terminal	3/0, 4/0	0.41" to 0.63"	Push In	1.4"	9.8"	Black	-50 to 350	7841A13	00000

Solder and Compression Welding Lugs

Solder these welding lugs in place, or use a crimping tool (not included) for a secure connection.

	For Wire Construction	For Wire Material	Lg.	Wd.	Ht.	Thk.	Terminal Material	Max. Temp.	Max. Voltage		Each
Straight







	1 Hole—For 1 Wire

	6, 4, 2	1/2"	0.500"	Stranded	Copper	2.67"	0.78"	0.63"	0.12"	Copper	Not Rated	80V AC 80V DC	7913A1	00000


	1, 1/0, 2/0	1/2"	0.500"	Stranded	Copper	2.89"	1"	0.768"	0.15"	Copper	Not Rated	80V AC 80V DC	7913A2	0000
	3/0, 4/0	1/2"	0.500"	Stranded	Copper	3.15"	1.17"	0.89"	0.16"	Copper	Not Rated	80V AC 80V DC	7913A3	0000
	4/0	5/8"	0.625"	Stranded	Copper	3.87"	1.36"	1.02"	0.17"	Copper	Not Rated	80V AC 80V DC	7913A4	00000

Welding Lug Covers

For Wire Ga.	Material		Each
6, 4, 2, 1, 1/0, 2/0, 3/0, 4/0	Vinyl Plastic	7828A11	000000

Insulated Set Screw Welding Lugs


Straight 1 Hole—For 1 Wire	Straight 1 Hole—For 2 Wires	45° Elbow

To prevent short-circuiting with nearby wire, a plastic cover insulates the barrel on these welding lugs. Tighten the set screw for a secure connection without crimping.

45° Elbow—45° elbow lugs connect to wire at an angle, so they fit in tight spaces.

	For Wire Construction	For Wire Material	Lg.	Wd.	Ht.	Thk.	Insulation Color	Insulation Material	Terminal Material	Max. Temp., ° F	Max. Voltage		Each
Straight







	1 Hole—For 1 Wire

	6, 4, 2, 1, 1/0	1/2"	0.500"	Stranded	Copper	3.625"	1.054"	1.270"	0.2"	Black	Nylon	Copper	470	40V AC 40V DC	7866A12	000000


	2/0, 3/0, 4/0	1/2"	0.500"	Stranded	Copper	3.625"	1.080"	1.520"	0.188"	Black	Nylon	Copper	470	40V AC 40V DC	7866A14	00000




			1 Hole—For 2 Wires

			2/0, 3/0, 4/0	5/8"	0.625"	Stranded	Copper	6.875"	2.687"	1.562"	0.257"	Black	Nylon	Copper	350	40V AC 40V DC	7866A15	00000


			45° Elbow







							1 Hole—For 1 Wire

							6, 4, 2, 1, 1/0	1/2"	0.500"	Stranded	Copper	3.125"	1.073"	1.750"	0.215"	Black	Nylon	Copper	470	40V AC 40V DC	7866A11	00000


							2/0, 3/0, 4/0	1/2"	0.500"	Stranded	Copper	3.375"	0.913"	1.991"	0.188"	Black	Nylon	Copper	470	40V AC 40V DC	7866A13	00000

Welding Lug Covers

For Wire Ga.	Material		Each
6, 4, 2, 1, 1/0, 2/0, 3/0, 4/0	Vinyl Plastic	7828A11	000000

Ready-to-Use Welding Cords with Male Connector and Grounding Clamp

Image of Product. Front orientation. Welding Cords. Grounding Clamp Connection, Connector Orifice, Male.

The male quick-action connector on these cords gives your welding set-up greater versatility by allowing quick changes.

Stranded Wire Class K—Stranded Wire Class K cords are good for general welding applications.

Stranded Wire Class M—Stranded Wire Class M cords are often used in pipe welding because they’re more flexible and durable than Stranded Wire Class K cords.

	No. of Wires	Outer Jacket Material		10 ft. Long	25 ft. Long	50 ft. Long
Stranded Wire Class K







	Black Outer Jacket

	1/0/1	1/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A31	0000000	0000000	0000000


	2/0/1	2/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A33	000000	000000	000000




			Red Outer Jacket

			1/0/1	1/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A844	000000	000000	000000


			2/0/1	2/0	MIG, TIG, Stick, Spot, Stud	1	EPDM	7940A846	000000	000000	000000


			Stranded Wire Class M







							Orange/Black Outer Jacket

							1/0/1	1/0	MIG, TIG, Stick, Spot, Stud	1	TPE	7940A845	000000	000000	000000


							2/0/1	2/0	MIG, TIG, Stick, Spot, Stud	1	TPE	7940A847	000000	000000	000000

Flame-Resistant Welding Cable

This cable meets Mine Safety and Health Administration (MSHA) standards for flame resistance. The insulation resists abrasion and chemicals.

Stranded Wire Class M—Class M cable is more flexible and durable than Class K cable.

				Outer Jacket							Per Ft.
	AWG	Stranded Wire Class	Wire Strand Count	Material	Color	Temp., ° F	Flammability Rating	Certification	Choose a Length, ft.		1-249	250-Up
600V AC/600V DC







				Flexible

				6	M	660/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A18	00000	00000


				4	M	1,045/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A11	0000	0000
				2	M	1,634/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A12	00000	0000
				1/0	M	2,597/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A14	00000	00000
				2/0	M	3,300/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A15	00000	00000
				3/0	M	4,214/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A16	00000	00000
				4/0	M	5,225/34	Polyethylene	Orange	-55 to 190	UL 2556 VW-1	CSA Certified, MSHA Accepted, UL Listed	10, 20, 25, 30, 50, 100, 250	7818A17	00000	00000