Power Connector Caps | McMaster-Carr

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Housing Material

78 Products

Outlet and Plug Caps

Cover unused electrical outlets or plug prongs to protect them from dust, dirt, liquids, and other contaminants.

For Plugs


2 Blades	3 Blades

	Material	Color	Pkg. Qty.		Pkg.
2 Blades



	1-15	Plastic	Clear	10	7827N11	00000


	3 Blades



			5-15	Plastic	Clear	10	7827N12	0000

For Wall Outlets

Material	Color	Pkg. Qty.		Pkg.



1-15, 5-15, 5-20	Plastic	Yellow	12	9534T1	000000


1-15, 5-15, 5-20	Plastic	Clear	12	9534T5	0000

Coaxial Electrical Connector Caps

Choose a BNC cap that matches the RG number of your coaxial cable. Caps terminate the end of an unused coaxial cable.

BNC Twist-On Connection

For Coax. Cable Type	For Coax. Cable Rating	For Coax. Cable Shielding	Resistance, ohm	Housing Material		Each
RG-59/U	General Purpose	Shielded	75	Nickel-Plated Copper	71115K36	000000

BNC Crimp-On Connection

Crimp-on caps attach with the included ferrule and create a hex-shaped connection. Crimpers (not included) are required to attach crimp-on caps to wire.

For Coax. Cable Type	For Coax. Cable Rating	For Coax. Cable Shielding	Resistance, ohm	Housing Material	Ferrule OD		Each
RG-6/U, RG-58/U, RG-59/U, RG-62A/U	General Purpose	Shielded	50	Nickel-Plated Brass	0.323"	71115K26	00000

Screw-Together Wet-Environment HDMI Electrical Connector Caps

Screw these caps onto the socket ends of audio/video HDMI connectors and cords. Caps are rated IP67 for protection against dust and temporary submersion. Caps protect sockets and maintain the IP rating when not in use.

Housing Connection Method	Component	Color	Housing Material	Environment	Enclosure Rating		Each
Screw Together	Cap	Black	Plastic	Dusty, Submersible	IP67	1860N11	00000

Screw-Together Wet-Environment RJ45 Electrical Connector Caps

Screw these caps onto the socket ends of Ethernet connectors and cords. Caps are rated IP67 for protection against dust and temporary submersion. Caps protect sockets and maintain the IP rating when not in use.

Housing Connection Method	Component	Color	Housing Material	Environment	Enclosure Rating	Temp. Range, ° F		Each
Screw Together	Cap	Black	Plastic	Dusty, Submersible	IP67	0 to 175	5697T44	000000

USB Electrical Connector Caps USB Connector Caps

Image of Attribute. Front orientation. USB Electrical Connector Caps USB Connector Caps.

Shield USB connectors from damage, contaminants, and moisture when they are not being used. Slide these flexible caps onto your connector and they conform for a snug fit.

For Outside
Lg.	Wd.	Inside Ht.	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
1/2"	3/16"	7/16"	200	Red	10	8601N11	00000

Wet-Environment USB Electrical Connector Caps


Locking-Pin Housing	Screw-Together Housing

Screw these caps onto the socket end of wet-environment USB cords. They maintain an IP67 rating when cords are not in use.

			Thread
Housing Connection Method	No. of Pins	Pin Dia.	Size	Type	ID	Material	Color	Environment	Enclosure Rating		Each
Locking Pin	3	1/32"	—	—	1"	Plastic	Black	Dusty, Submersible	IP67	8028T11	00000
Screw Together	—	—	13/16"-28	UNS	—	Plastic	Black	Dusty, Submersible	IP67	8028T6	00000

Hazardous-Location Safe-Break Pin-and-Sleeve Electrical Connector Caps

Caps are watertight to protect hazardous location safe-break plugs when not in use.

	Mfr.	Mfr. Model No.	Material	Color		Each
For Plugs



	1.4"	Meltric	22-1A426	Neoprene	Black	1590N24	000000


	1.9"	Meltric	22-3A426	Neoprene	Black	1590N54	00000
	2.1"	Meltric	22-6A426	Neoprene	Black	1590N84	00000

Harsh-Environment Micro M12 Screw-Together Electrical Connector Caps


For Plugs	For Sockets

Protect harsh environment M12 connectors when not in use. These caps are stainless steel for excellent corrosion resistance.

	Thread
	Size	Type	Location	Material	Includes	Environment	Temp. Range, ° F		Each
For Plugs



		M12 x 1 mm	Metric	Internal	Stainless Steel	Lanyard	Harsh	0 to 220	6897K75	000000


		1/2"-20	UNF	Internal	Stainless Steel	Lanyard	Harsh	0 to 220	6897K63	00000


		For Sockets



				M12 x 1 mm	Metric	External	Stainless Steel	Lanyard	Harsh	0 to 220	6897K59	00000


				1/2"-20	UNF	External	Stainless Steel	Lanyard	Harsh	0 to 220	6897K39	00000

Micro M12 Screw-Together Electrical Connector Caps


For Plugs	For Sockets

Protect M12 connectors when not in use.

	Thread
	Size	Type	Location	Material	Includes	Color	Temp. Range, ° F		Each
For Plugs



		M12 x 1 mm	Metric	Internal	Anodized Aluminum	Lanyard	Black	0 to 220	6897K73	000000


		1/2"-20	UNF	Internal	Anodized Aluminum	Lanyard	—	0 to 220	6897K61	00000


		For Sockets



				M12 x 1 mm	Metric	External	Anodized Aluminum	—	Black	0 to 220	6897K74	00000


				1/2"-20	UNF	External	Anodized Aluminum	—	Gray	0 to 220	6897K62	00000

Safe-Break Pin-and-Sleeve Electrical Connector Caps

Caps are watertight to protect safe-break plugs when not in use.

	Mfr.	Mfr. Model No.	Material	Color	Environment	Enclosure Rating		Each
For Plugs



	1.3"	Meltric	61-1A426	Neoprene	Black	Corrosive, Dusty, High-Pressure Washdown, Outdoor, Submersible, Washdown, Wet	IP66, IP67, IP69K, NEMA 4X	6737K511	000000


	1.8"	Meltric	61-3A426	Neoprene	Black	Corrosive, Dusty, High-Pressure Washdown, Outdoor, Submersible, Washdown, Wet	IP66, IP67, IP69K, NEMA 4X	6737K512	00000
	2.2"	Meltric	61-6A426	Neoprene	Black	Corrosive, Dusty, High-Pressure Washdown, Outdoor, Submersible, Washdown, Wet	IP66, IP67, IP69K, NEMA 4X	6737K513	00000
	2.6"	Meltric	31-6A426	Neoprene	Black	Corrosive, Dusty, High-Pressure Washdown, Outdoor, Submersible, Washdown, Wet	IP66, IP67, IP69K, NEMA 4X	6737K514	00000

Harsh-Environment Mini Electrical Connector Caps


External Thread with Lanyard	Internal Thread with Lanyard

Protect mini connectors when not in use. These caps are stainless steel for excellent corrosion resistance.

		Thread
	For Face Dia.	Size	Type	Material	Temp. Range, ° F		Each
External Thread



		0.55"	7/8"-16	UNS	Stainless Steel	0 to 220	69005K61	000000


		0.7"	1"-16	UNS	Stainless Steel	0 to 220	69005K63	00000
		0.8"	1 1/8"-16	UNS	Stainless Steel	0 to 220	69005K65	00000


		Internal Thread



				0.55"	7/8"-16	UNS	Stainless Steel	0 to 220	69005K62	00000


				0.7"	1"-16	UNS	Stainless Steel	0 to 220	69005K64	00000
				0.8"	1 1/8"-16	UNS	Stainless Steel	0 to 220	69005K66	00000

Weather-Resistant Turn-Lock Electrical Connector Caps

For Plugs

For Sockets

Protect your mated connections from moisture and light splashing. Slide a cap over your plug and another over your socket; screw the caps together to conceal the connection. Caps can be used with NEMA and non-NEMA configurations. The ends can be cut to accommodate a range of cable ODs. They are not intended for liquid immersion or direct spray.

					Black		Yellow
	ID	For Cable OD	Material	Environment		Each		Each
For Plugs



		1.6"	0.25" to 0.72"	Rubber	Outdoor	7305K1	000000	———	0


		2.1"	0.23" to 1.15"	Rubber	Outdoor	7305K3	00000	———	0
		2.4"	0.44" to 1.12"	Rubber	Outdoor	———	0	7305K7	000000


		For Sockets



				1.6"	0.25" to 0.72"	Rubber	Outdoor	7305K2	00000	———	0


				2.1"	0.23" to 1.15"	Rubber	Outdoor	7305K4	00000	———	0
				2.4"	0.44" to 1.12"	Rubber	Outdoor	———	0	7305K8	00000

Mini Electrical Connector Caps


External Thread with Lanyard	External Thread	Internal Thread with Lanyard	Internal Thread

Protect mini connectors when not in use.

		Thread
	For Face Dia.	Size	Type	Material	Color	Temp. Range, ° F	Includes		Each
External Thread



		0.55"	7/8"-16	UNS	Epoxy-Coated Zinc Alloy	Black	0 to 220	Lanyard	69005K21	000000


		0.8"	1 1/8"-16	UNS	Epoxy-Coated Zinc Alloy	Black	0 to 220	Lanyard	69005K41	00000
		0.87"	1 3/8"-16	UNS	Anodized Aluminum	—	-40 to 190	—	7265N28	00000


		Internal Thread



				0.55"	7/8"-16	UNS	Anodized Aluminum	—	0 to 220	Lanyard	69005K22	00000


				0.7"	1"-16	UNS	Anodized Aluminum	—	0 to 220	Lanyard	69005K32	00000
				0.8"	1 1/8"-16	UNS	Anodized Aluminum	—	0 to 220	Lanyard	69005K42	00000
				0.87"	1 3/8"-16	UNS	Anodized Aluminum	—	-40 to 190	—	7265N27	00000

High-Current Pin-and-Sleeve Electrical Connector Caps


For Female	For Male

Protect high-current connectors when not in use.

								For Female			For Male
For Current, amp	Mfr.	Material	Includes	Environment	Enclosure Rating	Certification	Color	Mfr. Model No.		Each	Mfr. Model No.		Each
300, 400	Leviton	Rubber	Lanyard	Outdoor, Wet	NEMA 3R	UL Listed, CSA Certified	Black	16P22-UE	8030K682	000000	16P21-UE	8030K672	000000
300, 400	Leviton	Rubber	Lanyard	Outdoor, Wet	NEMA 3R	UL Listed, CSA Certified	Blue	16P22-UB	8030K684	00000	16P21-UB	8030K674	00000
300, 400	Leviton	Rubber	Lanyard	Outdoor, Wet	NEMA 3R	UL Listed, CSA Certified	Green	16P22-UG	8030K685	00000	16P21-UG	8030K675	00000
300, 400	Leviton	Rubber	Lanyard	Outdoor, Wet	NEMA 3R	UL Listed, CSA Certified	Red	16P22-UR	8030K683	00000	16P21-UR	8030K673	00000
300, 400	Leviton	Rubber	Lanyard	Outdoor, Wet	NEMA 3R	UL Listed, CSA Certified	White	16P22-UW	8030K681	00000	16P21-UW	8030K671	00000

Washdown Plug and Socket Electrical Connector Caps


For Plugs	For Sockets

Caps can be used with straight-blade and turn-lock plugs and sockets.

					Black			Yellow
	For OD	Mfr.	Material	Enclosure Rating	Mfr. Model No.		Each	Mfr. Model No.		Each
For Plugs



		1.9"	Molex	Rubber	IP67	14WBLK	69435K321	000000	14W	69435K311	000000


		2.5"	Molex	Rubber	IP67	26WBLK	69435K361	00000	26W	69435K351	00000
		2.8"	Molex	Rubber	IP67	28WBLK	69435K411	00000	28W	69435K391	00000


		For Sockets



				1.9"	Molex	Rubber	IP67	—	———	0	50W50	69435K331	00000


				2.5"	Molex	Rubber	IP67	50W52BLK	69435K381	00000	50W52	69435K371	00000
				2.8"	Molex	Rubber	IP67	50W54BLK	69435K431	00000	50W54	69435K421	00000

Mil. Spec. Screw-Together Electrical Connector Caps

External Thread

Internal Thread

Protect Mil. Spec. connectors when not in use.

	Thread
	Size	Type	Material	Temp. Range, ° F		Each
External Thread



		5/8"-24	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T81	000000


		7/8"-20	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T83	00000
		1"-20	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T85	00000
		1 1/8"-18	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T87	00000
		1 1/4"-18	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T89	00000
		1 3/4"-18	UNS	Cadmium-Plated Aluminum	-65 to 255	8903T92	00000


		Internal Thread



				5/8"-24	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T82	00000


				7/8"-20	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T84	00000
				1"-20	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T86	00000
				1 1/8"-18	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T88	00000
				1 1/4"-18	UNEF	Cadmium-Plated Aluminum	-65 to 255	8903T91	00000
				1 3/4"-18	UNS	Cadmium-Plated Aluminum	-65 to 255	8903T93	00000