Welder Plugs | McMaster-Carr

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55 Products

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About NEMA Plugs, Sockets, and Receptacles

Identify your power connector's NEMA type by matching its blades or slots to our diagram.

Straight-Blade Connectors

Your go‑to connector for industrial workplaces, job sites, and maintenance shops.

Plugs

Industrial—Reliable performance and long life in manufacturing and processing environments.

Premium—Built to handle tough, repetitive applications, these connectors are more durable than industrial ones.

Housing Material	Certification	Color		Each







Industrial

6-50	250	50	Plastic	CSA Certified, UL Listed	Gray	7120K81	000000


10-50	125/250	50	Plastic	UL Listed	Yellow	7120K55	00000
14-50	125/250	50	Plastic	CSA Certified, UL Listed	Gray	7120K57	00000




		Premium

		10-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T18	000000


		14-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T17	000000
		15-50	250	50	Plastic	CSA Certified, UL Listed	Black	9096T89	000000

90° Elbow Plugs

Industrial—Reliable performance and long life in manufacturing and processing environments.

Premium—Built to handle tough, repetitive applications, these connectors are more durable than industrial ones.

Housing Material	Certification	Color		Each







Industrial

6-50	250	50	Plastic	CSA Certified, UL Listed	Gray	7120K82	0000000


10-50	125/250	50	Plastic	UL Listed	Black	7120K41	00000
14-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	8035K57	00000




		Premium

		5-50	125	50	Plastic	CSA Certified, UL Listed	Black	9096T78	000000


		6-50	250	50	Plastic	CSA Certified, UL Listed	Black	9096T56	000000
		7-50	277	50	Plastic	CSA Certified, UL Listed	Black	9096T82	000000
		10-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T58	000000
		14-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T57	000000
		15-50	250	50	Plastic	CSA Certified, UL Listed	Black	9096T96	000000

Sockets

Industrial—Reliable performance and long life in manufacturing and processing environments.

Premium—Built to handle tough, repetitive applications, these connectors are more durable than industrial ones.

Housing Material	Certification	Color		Each







Industrial

6-50	250	50	Plastic	CSA Certified, UL Listed	Gray	7120K83	0000000


10-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	7120K64	000000




		Premium

		10-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T28	000000

Outlet-Box-Mount Female Receptacles

Single

Industrial—Reliable performance and long life in manufacturing and processing environments.

Premium—Built to handle tough, repetitive applications, these connectors are more durable than industrial ones.

						Receptacles
	NEMA Type	Voltage, V AC	Current, amp	Housing Material	Certification	Color		Each
Single







				Industrial

				6-50	250	50	Plastic	C-UL Listed, CSA Certified, UL Listed	Black	7120K89	000000


				10-50	125/250	50	Plastic	UL Listed	Black	7120K7	0000
				14-50	125/250	50	Plastic	C-UL Listed, UL Listed	Black	7120K13	00000




						Premium

						6-50	250	50	Plastic	CSA Certified, UL Listed	Black	9096T46	00000


						10-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T48	00000
						14-50	125/250	50	Plastic	CSA Certified, UL Listed	Black	9096T47	000000

Extension Cord Adapters


1 Outlet	2 Outlets

Bridge the gap between your outlet and your equipment when connections don't match.

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

	Cable Designation	For Use Outdoors	Light Indicator Type	Number of Outlets		Each
NEMA 14-30 90° Elbow Plug × NEMA 14-50 90° Elbow Socket—125V AC/250V AC







	Yellow

	1 1/2	10	30	STW	Yes	—	1	5512N13	000000


	NEMA 14-50 Plug × NEMA 5-20 Socket—125V AC/250V AC







					Yellow

					3	10	50	STOW	Yes	Power	2	7197K83	00000


					NEMA 14-50 90° Elbow Plug × NEMA 6-50 90° Elbow Socket—125V AC/250V AC







									Yellow

									1 1/2	6	50	STW	Yes	—	1	5512N12	00000


									NEMA 14-50 90° Elbow Plug × NEMA TT-30 90° Elbow Socket—125V AC







													Orange

													1	10	30	SJTW	Yes	Power	1	5512N16	00000


													NEMA L14-30 Plug × NEMA 6-50 90° Elbow Socket—125V AC/250V AC







																	Yellow

																	1 1/2	10	30	STW	Yes	—	1	7197K65	00000


NEMA TT-30 90° Elbow Plug × NEMA 14-50 90° Elbow Socket—125V AC







																	Black

																	1	10	30	SJTW	Yes	Power	1	5512N17	00000

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


	NEMA 14-50 90° Elbow Plug × 90° Elbow Socket—125V AC/250V AC







					Black

					15	6	50	STW	Yes	Power	C-UL Listed, UL Listed	7522K151	000000


					30	6	50	STW	Yes	Power	C-UL Listed, UL Listed	7522K152	000000
					50	6	50	STW	Yes	Power	C-UL Listed, UL Listed	7522K153	000000

Power Cords

Your go-to for direct wiring applications. Install these power cords in everything from computers and lab equipment to power tools and appliances. Made to NEC Article 400 requirements, they reliably deliver power and withstand everyday wear and tear.

						Outer Jacket
	Lg., ft.	Voltage, V AC	Current, amp	AWG	Cable Designation	Material	Color	Certification		Each
90° Elbow NEMA 14-50 Plug × Wire Leads



		4	125/250	50	8, 6	STW	PVC	Black	UL Listed	70355K703	000000


		30	125/250	50	8, 6	STW	PVC	Black	UL Listed	70355K704	000000
		36	125/250	50	8, 6	STW	PVC	Black	UL Listed	70355K705	000000

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

Light Duty Power Cords

More flexible than standard power cords and easier to route to indoor equipment such as power tools and appliances. These cords are good for low-traffic areas where they’ll be tucked out of the way since they aren't as rugged as standard cords.

						Outer Jacket
	Lg., ft.	Voltage, V AC	Current, amp	AWG	Cable Designation	Material	Color	Certification		Each
90° Elbow NEMA 10-50 Plug × Ring Terminal



		4	125/250	50	8, 6	SRDT	PVC	Gray	UL Listed	70355K114	000000


		6	125/250	50	8, 6	SRDT	PVC	Gray	UL Listed	70355K37	00000


		90° Elbow NEMA 14-50 Plug × Spade Terminal



				4	125/250	50	8, 6	SRDT	PVC	Black	UL Listed	70355K706	00000


				6	125/250	50	8, 6	SRDT	PVC	Black	UL Listed	70355K94	00000

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