Push In Caps | McMaster-Carr

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Counterbore Diameter

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Material

Sleeve Material

For Use With

Shape

Installed Height

Ball Material

Minimum Counterbore Depth

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 9,999 psi

REACH

RoHS

Export Control Classification Number (ECCN)

2B999

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

For USB Port Type

Maximum Temperature

DFARS Specialty Metals

Thread Size

For Hole Type

Color

Hardness

Head Height

Head Length

93 Products

Push-In Bore Sealing Plugs

Image of Attribute. Side1 orientation. CrossSection view. Contains Annotated. Push-In Bore Sealing Plugs .

Permanently seal unthreaded, counterbored holes in manifolds and other pneumatic or hydraulic components. These plugs resist vibration better than threaded plugs and don’t require thread sealant. They consist of a serrated sleeve with a ball bearing inside. When installed, the bearing is pushed inside the sleeve. This expands the sleeve so its serrations bite into the walls of the hole, sealing it shut.

Unlike plugs that install with an air- or hydraulic-powered tool, these plugs don’t require power to install. However, they’re harder to fit into angled or deep holes. To install, drive the installation tool (sold separately) into the plug with a hammer or arbor press.

Aluminum Sleeve—Plugs with an aluminum sleeve are ideal for plugging holes in aluminum manifolds. They resist corrosion in wet environments. These plugs are also lighter in weight than our other plugs, but they won’t handle pressures as high.

Zinc-Plated Steel Sleeve—Plugs with a steel sleeve can handle higher pressures than aluminum-sleeved plugs, but not as much as those with a stainless steel sleeve. They’re zinc plated for corrosion resistance in wet environments, but they’ll corrode from salt water and chemicals.

18-8 Stainless Steel Sleeve—Plugs with a stainless steel sleeve work in the highest pressures of any sleeve material, so they’re the best choice for hydraulic applications. They also have good corrosion resistance.

		Counterbore
	Sealing Dia.	Dia.	Min. Dp.	Installed Ht.	Max. Pressure, psi	Max. Temp., ° F	Pkg. Qty.		Pkg.
Aluminum Sleeve



		1/8"	5/32"	0.113"	1/8"	2,100	300	5	6357N28	000000


		1/8"	5/32"	0.149"	5/32"	3,000	300	5	6357N23	00000
		5/32"	3/16"	0.17"	3/16"	2,100	300	5	6357N29	00000
		5/32"	3/16"	0.208"	7/32"	3,000	300	5	6357N24	00000
		3/16"	7/32"	0.17"	3/16"	2,100	300	1	6357N35	0000
		3/16"	7/32"	0.208"	7/32"	3,000	300	1	6357N32	0000
		7/32"	1/4"	0.196"	7/32"	2,100	300	1	6357N37	0000
		7/32"	1/4"	0.247"	1/4"	3,000	300	1	6357N39	0000
		1/4"	9/32"	0.233"	1/4"	2,100	300	1	6357N46	0000
		1/4"	9/32"	0.287"	19/64"	3,000	300	1	6357N44	0000
		9/32"	5/16"	0.255"	9/32"	2,100	300	1	6357N51	0000


		9/32"	5/16"	0.326"	21/64"	3,000	300	5	6357N15	00000
		5/16"	11/32"	0.275"	5/16"	2,100	300	5	6357N25	00000
		5/16"	11/32"	0.385"	25/64"	3,000	300	5	6357N19	00000
		11/32"	3/8"	0.385"	25/64"	3,000	300	5	6357N27	00000
		3/8"	13/32"	0.308"	23/64"	2,100	300	1	6357N49	0000
		3/8"	13/32"	0.425"	7/16"	3,000	300	1	6357N47	0000
		2.3 mm	3 mm	2.9 mm	3.18 mm	3,000	300	5	6357N17	00000
		3.3 mm	4 mm	3.8 mm	4 mm	3,000	300	5	6357N21	00000
		5.3 mm	6 mm	6.3 mm	6.5 mm	3,000	300	1	6357N33	0000
		6.2 mm	7 mm	7.3 mm	7.5 mm	3,000	300	1	6357N36	0000


		9.2 mm	10 mm	10.8 mm	11 mm	3,000	300	5	6357N26	00000
		11 mm	12 mm	12.8 mm	13 mm	1,500	300	1	6357N41	0000


		Zinc-Plated Steel Sleeve



				2.2 mm	3 mm	3.4 mm	3.6 mm	4,600	300	5	6357N14	00000


				3.3 mm	4 mm	3.8 mm	4 mm	4,600	300	5	6357N11	0000
				4.3 mm	5 mm	5.3 mm	5.5 mm	4,600	300	5	6357N12	0000
				5.3 mm	6 mm	6.3 mm	6.5 mm	4,600	300	5	6357N13	00000
				6.4 mm	7 mm	7.3 mm	7.5 mm	4,600	300	5	6357N16	00000
				7.4 mm	8 mm	8.3 mm	8.5 mm	4,600	300	1	6357N31	0000
				8.4 mm	9 mm	9.8 mm	10 mm	4,600	300	1	6357N43	0000
				9.4 mm	10 mm	10.8 mm	11 mm	4,600	300	1	6357N53	0000
				10.6 mm	12 mm	12.8 mm	13 mm	3,600	300	1	6357N54	00000
				12.7 mm	14 mm	14.5 mm	15 mm	3,600	300	1	6357N56	00000
				14.7 mm	16 mm	16.5 mm	17 mm	3,600	300	1	6357N58	00000


				16.7 mm	18 mm	18.5 mm	19 mm	3,600	300	1	6357N61	00000
				18.7 mm	20 mm	21.5 mm	22 mm	3,600	300	1	6357N65	00000
				20.7 mm	22 mm	24.5 mm	25 mm	3,600	300	1	6357N66	00000


				18-8 Stainless Steel Sleeve



						1/16"	3/32"	0.081"	3/32"	5,500	300	5	24675K35	0000


3/32"	1/8"					0.113"	1/8"	5,500	300	5	24675K32	0000
1/8"	5/32"					0.13"	5/32"	5,500	300	5	24675K81	00000
5/32"	3/16"					0.152"	13/64"	5,500	300	5	24675K82	00000
3/16"	7/32"					0.187"	7/32"	5,500	300	5	24675K83	00000
7/32"	1/4"					0.212"	17/64"	5,500	300	5	24675K84	00000
1/4"	9/32"					1/4"	9/32"	5,500	300	5	24675K85	00000
9/32"	5/16"					0.327"	21/64"	5,500	300	5	24675K86	00000
5/16"	11/32"					0.385"	25/64"	5,500	300	1	24675K87	0000
11/32"	3/8"					0.425"	25/64"	5,500	300	1	24675K88	0000
3/8"	13/32"					0.425"	7/16"	4,000	300	1	24675K89	0000


13/32"	7/16"					0.503"	33/64"	4,000	300	1	24675K91	0000
7/16"	15/32"					0.504"	33/64"	4,000	300	1	24675K92	0000
2.2 mm	3 mm					3.4 mm	3.6 mm	5,500	300	1	6357N34	0000
3.3 mm	4 mm					3.8 mm	4 mm	5,500	300	1	6357N42	0000
4.3 mm	5 mm					5.3 mm	5.5 mm	5,500	300	1	6357N45	0000
5.3 mm	6 mm					6.3 mm	6.5 mm	5,500	300	1	6357N52	0000
6.4 mm	7 mm					7.3 mm	7.5 mm	5,500	300	1	6357N55	00000
7.4 mm	8 mm					8.3 mm	8.5 mm	5,500	300	1	6357N57	00000
8.4 mm	9 mm					9.8 mm	10 mm	5,500	300	1	6357N59	00000
9.4 mm	10 mm					10.8 mm	11 mm	5,500	300	1	6357N63	00000


10.6 mm	12 mm					12.8 mm	13 mm	4,100	300	1	6357N62	00000
12.7 mm	14 mm					14.5 mm	15 mm	4,100	300	1	6357N64	00000

Bore Sealing Plug Installation Tools

	Dia.	Lg.		Each
Steel



	3/32"	3/8"	5"	24675K33	000000


	1/8", 3 mm	3/8"	5"	6404N11	00000
	5/32", 4 mm	3/8"	5"	24675K41	00000
	3/16"	3/8"	5"	24675K42	00000
	7/32", 5 mm	3/8"	5"	24675K43	00000
	1/4", 6 mm	3/8"	5"	24675K44	00000
	9/32", 7 mm	3/8"	5"	24675K45	00000
	5/16", 8 mm	3/8"	5"	24675K46	00000
	11/32", 9 mm	5/8"	5"	24675K47	00000
	3/8"	5/8"	5"	24675K48	00000
	13/32", 10 mm	5/8"	5"	24675K49	00000


	7/16"	5/8"	5"	24675K51	00000
	15/32", 12 mm	5/8"	5"	24675K52	00000
	9/16", 14 mm	3/4"	5"	6404N12	000000
	5/8", 16 mm	3/4"	5"	6404N13	000000
	11/16", 18 mm	3/4"	5"	6404N14	000000
	25/32", 20 mm	1"	5"	6404N15	000000
	7/8", 22 mm	1"	5"	6404N16	000000

RJ45 Port Plugs

Shield unused RJ45 type ports on computers and other electronic equipment from debris and moisture. No tool required—push them in and pull them out by hand.

	Head
	Lg.	Wd.	Ht.	Overall Ht.	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
Silicone Rubber



		1/2"	13/32"	3/32"	11/32"	300	Black	10	7146N15	00000

Data Port Plug Assortment

Keep unused computer ports free from dust, debris, and moisture. These assortments have plugs for over a dozen types of ports, from USB to barrel-style DC.

No. of Pieces	Includes	Material	Max. Temp., ° F	Color		Each
40	Eight USB-A Plugs Two USB-C Plugs Four Mini DisplayPort Plugs Four HDMI Plugs Four DisplayPort Plugs Two DVI Plugs One VGA Plug Four 3.5 mm Audio Plugs Three RJ45 Plugs Four COM Plugs Two 6-Pin Mini DIN Plugs One Parallel Plug One Barrel-Style DC Plug	Plastic	155	Black	6802N11	000000

Fixture Plate Plugs

Fill unused holes on fixture plates and columns to keep chips and shavings from clogging or damaging them. These plugs are easy to install and remove, so you can switch them to a different hole when you need to change setups.

Push-In Plugs for Unthreaded Holes

Push-in plugs slide into unthreaded holes with finger pressure. They’re hollow, but they come with a spring-loaded cap to keep debris from collecting inside the plug. Remove these plugs by twisting a dowel pin removal tool into their internal threads. Made from brass, they’re nonmarring, so they won’t damage the surface of fixture bushings.

	Dia.	Ht.	O-Ring Material		Each
Brass



	1/4"-20	1/2"	7/8"	Fluoroelastomer	3161N18	00000

USB Port Locks

Require a key to access your USB port. To install, insert these plugs into your port, just like you would with any USB drive. They're often used to protect sensitive computer and networking equipment.

	Data Port Locks											Replacement Keys		Replacement Plugs
	For USB Port Type	Lg.	Wd.	Ht.	Max. Temp., ° F	Color	Lock Type	No. of Pieces	Includes		Each		Each	Pkg. Qty.		Pkg.
Polycarbonate



		USB-A	1/2"	3/16"	13/32"	140	Black	Keyed	7	One Key, Six Plugs	8076N11	000000	6855N12	000000	10	8076N12	000000


		USB-C	5/16"	3/32"	1/4"	140	Gray	Keyed	5	One Key, Four Plugs	8076N15	00000	8076N13	00000	10	8076N14	00000

USB Port Plugs

Keep dust, debris, and moisture out of unused USB-A ports. Simply insert and remove these plugs by hand.

		Head
	For USB Port Type	Lg.	Wd.	Ht.	Overall Ht.	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
Silicone Rubber



		USB-A	9/16"	1/4"	1/4"	1/2"	300	Black	10	5978N11	00000

Tamper-Evident Tapered Plugs

Often used on gas cylinders, these plugs cinch and lock tightly around valve heads to block the ports—they must be cut off making it clear if the cylinder has been tampered with. The plugs are tapered to fit a range of hole diameters. They're also designed to fit Compressed Gas Association (CGA) valves.

	Overall Lg.	Band Wd.	Max. Temp., ° F	Hardness	Color	Pkg. Qty.		Pkg.
Plastic



	27/32" to 1 7/32"	10 1/8"	7/8"	300	Durometer 54A	Yellow	10	3050N11	000000


	1 1/4" to 1 5/16"	10 13/16"	1 1/4"	300	Durometer 54A	Red	10	3050N12	00000

RJ45 Port Locks

Block Ethernet ports from unauthorized use—these plugs lock in place to prevent anyone from connecting to your device. They’re often used to protect sensitive computer and networking equipment. Just push them in to install them. You can only remove them using the key.

	Data Port Locks										Replacement Keys		Replacement Plugs
	Lg.	Wd.	Ht.	Max. Temp., ° F	Color	Lock Type	No. of Pieces	Includes		Each		Each	Pkg. Qty.		Pkg.
Polycarbonate



		15/32"	3/8"	9/16"	140	Black	Keyed	11	One Key, Ten Plugs	8073N12	000000	6855N12	000000	12	8073N13	000000

Permanent USB Port Locks

Permanently block access to a USB port to protect your device from unwanted connections. Push these locks into a port and two teeth will lock them in place. Once installed, they can’t be removed without destroying the port.

	Lg.	Wd.	Ht.	Max. Temp., ° F	Color		Each
Polycarbonate



	USB-A	1/2"	3/16"	13/32"	140	Red	5971N11	000000