6-20 Extension Cords | McMaster-Carr

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49 Products

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About Extension Cords

Find the right wire gauge based on your application, power draw, and cord length.

Light Duty Extension Cords

Power light fixtures and other small appliances with these extension cords. They have a flat profile, so they run neatly along walls and baseboards.

	Cable Designation	For Use Outdoors	Certification		Each
NEMA 6-20 90° Elbow Plug × Socket—250V AC







	Gray

	9	12	20	SPT-3	No	C-UL Listed, UL Listed	7469K16	000000

GFCI Extension Cords

Inline GFCI

Protect people and equipment from electric shock. These extension cords have a GFCI to cut power instantly when they detect a fault. They work even if you plug the cord into an outlet that doesn't have a GFCI.

Inline GFCI—The GFCI sits along the cord for easy access when you need to reset it. However, it doesn't protect the length of cord between the outlet and the GFCI.

Manual Reset—Prevent unexpected start-up by cutting electricity until you press a reset button. Choose these cords for job sites, workshops, and outdoor areas where moisture and equipment faults are common.

	Current, amp	Cable Designation	For Use Outdoors	Certification		Each
NEMA 6-20 Plug × Socket—240V AC







	Inline GFCI—Manual Reset

	6	Yellow	12	20	SJTW	Yes	CSA Certified, UL Listed	7348K56	0000000

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.

	Cable Designation	For Use Outdoors	Certification		Each
NEMA 6-20 Plug × Socket—250V AC







	Yellow

	25	14	18	SOOW	Yes	UL Listed	5839K13	0000000

Extension Cord Adapters

1 Outlet

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

	Cable Designation	For Use Outdoors	Number of Outlets		Each
NEMA L14-30 Plug × NEMA 6-20 Socket—125V AC/250V AC







	Yellow

	1 1/2	10	30	STW	Yes	1	7197K64	000000

IEC Power Cords

The standard for electronic equipment, these cords power anything with an IEC connection, from computers to lab equipment. 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
NEMA 6-20 Plug × IEC C19 Socket—Unshielded



		8	250	20	12	SJT	PVC	Black	C-UL Listed, UL Listed	71535K27	000000

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.

Power and Ground Presence Indicator—Check the status of your ground connection. A green light signals that connectors have power and are safely grounded. A red light indicates power only. The lights are visible from any angle for quick identification.

Rubber Housing—Protect connectors from damage caused by drops and impact.

Light Type	Housing Material	Certification	Color		Each







Industrial

6-20	250	20	—	Plastic	UL Listed	Black	7196K33	000000


6-20	250	20	—	Rubber	CSA Certified, UL Listed	Yellow	71435K47	00000
6-20	250	20	Power and Ground Presence Indicator	Plastic	C-UL Listed, UL Listed	Black	8094T37	00000




		Premium

		6-20	250	20	—	Plastic	CSA Certified, UL Listed	Black	9096T14	00000

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

6-20	250	20	Plastic	CSA Certified, UL Listed	Black	8035K54	000000




		Premium

		6-20	250	20	Plastic	CSA Certified, UL Listed	Black	9096T54	00000

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.

Rubber Housing—Protect connectors from damage caused by drops and impact.

Light Type	Housing Material	Certification	Color		Each







Industrial

6-20	250	20	—	Plastic	UL Listed	Black	7196K43	000000


6-20	250	20	—	Rubber	CSA Certified, UL Listed	Yellow	71435K48	00000
6-20	250	20	Power and Ground Presence Indicator	Plastic	C-UL Listed, UL Listed	Black	8094T38	00000




		Premium

		6-20	250	20	—	Plastic	CSA Certified, UL Listed	Black	9096T24	00000

Outlet-Box-Mount Female Receptacles


Single	Duplex

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.

Flush-Profile Receptacles—The flat face lies flush with your wall plate for a streamlined appearance.

						Receptacles			Flush-Profile Receptacles
	NEMA Type	Voltage, V AC	Current, amp	Housing Material	Certification	Choose a Color		Each	Choose a Color		Each
Single







				Industrial

				6-20	250	20	Plastic	CSA Certified, UL Listed	Black, Brown, Gray, Ivory, Red, White	7120K88	000000	—	———	0


				6-20	250	20	Plastic	UL Listed	—	———	0	Black, Gray, White	69105K16	000000




						Premium

						6-20	250	20	Plastic	CSA Certified, UL Listed	Brown, Ivory	9096T44	00000	—	———	0


						Duplex







										Industrial

										6-20	250	20	Plastic	C-UL Listed, UL Listed	—	———	0	Black, White	69105K15	00000


										6-20	250	20	Plastic	C-UL Listed, CSA Certified, UL Listed	Ivory	7120K941	00000	—	———	0
										6-20	250	20	Plastic	C-UL Listed, CSA Certified, UL Listed	White	7120K942	00000	—	———	0
										6-20	250	20	Plastic	CSA Certified, UL Listed	Black, Brown, Gray, Red	7120K94	00000	—	———	0




												Premium

												6-20	250	20	Plastic	CSA Certified, UL Listed	Brown, Ivory	9096T34	00000	—	———	0

Outlet-Box-Mount Combination Female Receptacles

Duplex

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

					Receptacles
	NEMA Type (Voltage, V AC)	Current, amp	Housing Material	Certification	Choose a Color		Each
Duplex







				Industrial

				5-20 (125), 6-20 (250)	20	Plastic	CSA Certified, UL Listed	Brown, Gray, Ivory	7120K37	000000

Panel-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.

	Housing Material	Certification	Color		Each
Single







	Industrial

	6-20	250	20	Plastic	CSA Certified, UL Listed	White	8036K8	000000




			Premium

			6-20	250	20	Plastic	CSA Certified, UL Listed	White	9096T68	00000

Panel-Mount Male 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.

	Housing Material	Certification	Color		Each
Single







	Industrial

	6-20	250	20	Plastic	CSA Certified, UL Listed	White	8036K4	000000




			Premium

			6-20	250	20	Plastic	CSA Certified, UL Listed	White	9096T67	00000

Vibration-Resistant Washdown Straight-Blade Connectors

Screw on the locking ring to keep these connectors secure under high vibration, such as in oil drilling and mining operations. They are IP and NEMA rated to withstand high-pressure, high-temperature washdowns when mated.

Plugs

Plugs have a multiple-ring seal to keep out liquid.

Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each



6-20	250	20	Plastic	IP66, IP67, IP68, IP69K, NEMA 6P, NEMA 13	CSA Certified, UL Listed	Black	2320N14	000000

Sockets with Attached Cover

Sockets have an attached cover for a watertight seal when connectors aren't mated.

Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each



6-20	250	20	Plastic	IP66, IP67, IP68, IP69K, NEMA 6P, NEMA 13	CSA Certified, UL Listed	Black	2320N18	0000000

Outlet-Box-Mount Receptacles with Attached Cover

Image of Product. Front orientation. Power Connectors. Vibration-Resistant Washdown Straight-Blade Connectors, Outlet-Box-Mount Receptacles with Attached Cover, Single.

Single

Receptacles have an attached cover for a watertight seal when connectors aren't mated.

	Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each
Single



	6-20	250	20	Anodized Aluminum	IP66, IP67, IP68, IP69K, NEMA 6P, NEMA 13	CSA Certified, UL Listed	Gray	2320N23	0000000

Washdown Straight-Blade Connectors

A multiple-ring seal and rubber housing protect these connectors from frequent washdowns. IP and NEMA rated, they seal out water and dust when mated, even if briefly submerged.

Plugs mate with female receptacles and sockets with an attached cover. Male receptacles mate with sockets without an attached cover.

Plugs

Rubber Housing—Protect connectors from damage caused by drops and impact.

Plugs									Caps
NEMA Type	Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each		Each



	6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Black	7140K82	000000	69435K321	000000


	6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Yellow	7140K27	00000	69435K311	00000

Sockets

Rubber Housing—Protect connectors from damage caused by drops and impact.

Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each



6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Yellow	7140K68	000000

Sockets with Attached Cover

Rubber Housing—Protect connectors from damage caused by drops and impact.

Sockets									Caps
NEMA Type	Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each		Each



	6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Yellow	7140K28	000000	69435K331	000000

Outlet-Box-Mount Receptacles with Attached Cover

Single

Rubber Housing—Protect connectors from damage caused by drops and impact.

	Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each
Single



	6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Yellow	7140K34	000000

Outlet Boxes with Conduit Connection

		Each
1/2 NPT Female Conduit Connection	69435K11	000000
3/4 NPT Female Conduit Connection	69435K12	00000

Outlet-Box-Mount Male Receptacles with Attached Cover

Image of Product. Front orientation. Power Connectors. Washdown Straight-Blade Connectors, Outlet-Box-Mount Male Receptacles with Attached Cover, Single.

Single

Rubber Housing—Protect connectors from damage caused by drops and impact.

	Voltage, V AC	Current, amp	Housing Material	Enclosure Rating	Certification	Color		Each
Single



	6-20	250	20	Rubber	IP69K, NEMA 6P, NEMA 12	CSA Certified, UL Listed	Yellow	7140K58	0000000

Outlet Boxes with Conduit Connection

		Each
1/2 NPT Female Conduit Connection	69435K11	000000
3/4 NPT Female Conduit Connection	69435K12	00000

Easy-Access Straight-Blade Connectors

A convenient one-piece design with no assembly required. These connectors snap shut like a suitcase and open to adjust and rewire as needed. Also known valise connectors.

Plugs


Hinged Housing Shown Open

Voltage, V AC	Current, amp	Wire Connection	Housing Material	Certification	Color		Each



6-20	250	20	Screw Terminal	Plastic	C-UL Listed, UL Listed	Yellow	7216K57	000000

Sockets


	Hinged Housing Shown Open

Voltage, V AC	Current, amp	Wire Connection	Housing Material	Certification	Color		Each



6-20	250	20	Screw Terminal	Plastic	C-UL Listed, UL Listed	Yellow	7216K58	000000

Snug-Fit Straight-Blade Connectors

Also known as hospital-grade connectors, these have an extra-tight fit to remain secure when mated under high vibration. They're marked with a green dot, so you know they're a good choice to power critical devices, such as testing and calibration equipment. While they're essential in healthcare facilities, they also power frequently moved tools and workstations so bumps and vibration won't loosen connectors.

Plugs

Voltage, V AC	Current, amp	Housing Material	Certification	Color		Each



6-20	250	20	Plastic	C-UL Listed, CSA Certified, UL Listed	Black	7213K47	000000

90° Elbow Plugs

Voltage, V AC	Current, amp	Housing Material	Certification	Color		Each



6-20	250	20	Plastic	CSA Certified, UL Listed	Clear	7213K14	000000

Sockets

Voltage, V AC	Current, amp	Housing Material	Certification	Color		Each



6-20	250	20	Plastic	C-UL Listed, CSA Certified, UL Listed	Black	7213K34	000000

Outlet-Box-Mount Female Receptacles

Duplex

	Voltage, V AC	Current, amp	Housing Material	Certification	Choose a Color		Each
Duplex



	6-20	250	20	Plastic	CSA Certified, UL Listed	Ivory, Red	7462K33	000000

Corrosion-Resistant Straight-Blade Connectors

Stainless steel hardware and nickel-plated blades or slots protect connections from damage in corrosive environments.

Plugs

Voltage, V AC	Current, amp	Housing Material	Certification	Color		Each



6-20	250	20	Plastic	CSA Certified, UL Listed	Yellow	70145K24	000000

Outlet-Box-Mount Female Receptacles


Single	Duplex

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



	6-20	250	20	Plastic	CSA Certified, UL Listed	Yellow	70145K44	000000


	Duplex



			6-20	250	20	Plastic	CSA Certified, UL Listed	Yellow	70145K56	00000