Brass Dust Plugs | McMaster-Carr

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	Material Material

Brass

	Body Material Body Material

Brass

	Type Type

	Plug		Cap

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

Chicago Fire Department

	For Use With For Use With

	Connection Style Connection Style

Cam-and-Groove

Threaded

Barbed

	Shape Shape


Cap/Plug	Straight

	Gender Gender

Male

Female

	Coupling Size Coupling Size

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Connection Type Connection Type


Hose	Pipe

Tube

	Cam-and-Groove Component Cam-and-Groove Component


Socket	Plug

	Maximum Temperature Maximum Temperature

Less than 150° F

200° to 249° F

250° to 499° F

	Minimum Temperature Minimum Temperature

	Length Length

	Maximum Pressure Maximum Pressure

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Pipe Size Pipe Size

1/16

1/4

1/2

	Specifications Met Specifications Met

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Environment Environment

77 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

About Noise, Filtration, and Flow Ratings

About Fire-Fighting Hose Threads

Give open-ended standoffs a finished look and protect them from dirt and debris.

For technical drawings and 3-D models, click on a part number.

Material	For Standoff OD	Ht.	Thread Lg.	Choose a Thread Size		Each
Zinc-Plated Brass	1/4"	1/4"	3/8"	4-40, 6-32, 8-32, 10-32	000000000	00000

Metal Cam-and-Groove Hose Couplings for Water

A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.

Couplings with locking levers prevent accidental disconnection. The locks engage automatically when the coupling is connected. Press the locks simultaneously to disengage.

Brass couplings are softer than aluminum plugs and sockets, so they’re easier to thread together. They have good corrosion resistance.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

For technical drawings and 3-D models, click on a part number.

End Plugs

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Brass
Coupling Size	Plug OD	Max. Pressure		Each
1/2	15/16"	250 psi @ 72° F	000000000	000000
3/4	1 1/4"	250 psi @ 72° F	00000000	00000
1	1 7/16"	250 psi @ 72° F	00000000	00000
1 1/4	1 13/16"	250 psi @ 72° F	00000000	00000
1 1/2	2 1/8"	250 psi @ 72° F	00000000	00000
2	2 1/2"	250 psi @ 72° F	00000000	00000
2 1/2	3"	200 psi @ 72° F	00000000	00000
3	3 5/8"	200 psi @ 72° F	00000000	00000
4	4 3/4"	150 psi @ 72° F	00000000	00000

6" Retaining Chain	00000000	Each	00000
12" Retaining Chain	00000000	Each	0000

Caps with Locking Levers

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Caps
		Levers						Replacement Gaskets			Brass Replacement Levers
Coupling Size	Socket ID	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.		Each
Brass
1	1 7/16"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	000000000	000000	10	0000000	00000	000000000	000000
1 1/4	1 13/16"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	000000000	00000	10	0000000	0000	000000000	00000
1 1/2	2 1/8"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	000000000	00000	10	0000000	0000	000000000	00000
2	2 1/2"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	000000000	000000	10	0000000	0000	000000000	00000
2 1/2	3"	2	Brass	Zinc-Plated Steel	200 psi @ 72° F	000000000	000000	10	0000000	0000	000000000	00000
3	3 5/8"	2	Brass	Zinc-Plated Steel	200 psi @ 72° F	000000000	000000	10	0000000	00000	000000000	00000
4	4 3/4"	2	Brass	Zinc-Plated Steel	150 psi @ 72° F	000000000	000000	10	0000000	00000	000000000	00000

12" Retaining Chain	00000000	Each	00000
6" Retaining Chain	00000000	Each	0000

Caps

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Caps
		Levers						Replacement Gaskets			Replacement Levers
Coupling Size	Socket ID	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.		Each
Brass
1/2	15/16"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	000000000	000000	10	0000000	00000	000000	00
3/4	1 1/4"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	00000
1	1 7/16"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	0000
1 1/4	1 13/16"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	0000
1 1/2	2 1/8"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	0000
2	2 1/2"	2	Brass	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	0000
2 1/2	3"	2	Brass	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	0000	000000000	0000
3	3 5/8"	2	Brass	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	00000	000000000	0000

6" Retaining Chain	00000000	Each	00000
12" Retaining Chain	00000000	Each	0000

Threaded Hose Fittings for Compressed Gas

Use these fittings to connect welding hose to pressure regulators and torches. They are also known as CGA (Compressed Gas Association) fittings. Fittings are brass for good corrosion resistance.

Fittings with left-hand threads are identified with a notch in the nut.

Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.

For technical drawings and 3-D models, click on a part number.

Caps, Female Hose

Maximum Pressure: 200 psi @ 72° F
Maximum Temperature: 120° F

Brass
CGA Number	Gas Fitting Size	Thread Size	Thread Type	Thread Direction	Chain Lg.	For Use With		Each
022	B	9/16"-18	UN/UNF (CGA)	Right Hand	6"	Oxygen	0000000	00000
023	B	9/16"-18	UN/UNF (CGA)	Left Hand	6"	Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Propane	0000000	0000

Rocker-Lug Fire Hydrant Caps and Plugs

Cap

Plug

The rocker lugs on these caps and plugs allow for easy gripping, so you can quickly close off fire hydrants and washdown equipment. Tighten with a hook-style spanner wrench (sold separately). Caps and plugs are brass for good corrosion resistance.

NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. Chicago Fire Department threads are only compatible with other Chicago Fire Department threads.

Cap
Fire Hose Trade Size	Thread Type	Material	Lg.	Chain Lg.		Each
1	NH/NST	Brass	1 7/32"	9"	00000000	000000
1 1/2	NH/NST	Brass	1 1/8"	9"	00000000	00000
2 1/2	NH/NST	Brass	1 7/16"	9"	00000000	00000
Plug
1 1/2	NH/NST	Brass	1 11/16"	9"	0000000	00000
2 1/2	NH/NST	Brass	2 3/32"	9"	0000000	00000
2 1/2	Chicago Fire Department	Brass	2 3/32"	9"	0000000	00000

Metal Garden Hose Fittings

Connect these fittings to rubber or plastic garden hose for a variety of water supply applications.

Brass fittings have good corrosion resistance and are softer than other metal fittings, so they’re easier to thread together.

For technical drawings and 3-D models, click on a part number.

Caps, GHT Female Threaded Hose

Brass
Garden Hose Trade Size	Washer Material	Lg.	Pkg. Qty.		Pkg.
3/4	Buna-N Rubber	9/16"	2	00000000	00000

Washers for Female GHT Threaded Connections

Washer Without Screen

Washer with Screen

Without Screen
ID	OD	Thick.	For Garden Hose Trade Size	For Hose ID	Material	Color	Screen Material	Pkg. Qty.		Pkg.
5/8"	1"	1/8"	3/4	1/2", 5/8", 3/4"	SBR Rubber	Red	__	10	00000000	00000
With Screen
9/16"	1"	1/8"	3/4	1/2", 5/8", 3/4"	SBR Rubber	Black	Stainless Steel	3	00000000	0000

Brass Low-Pressure Barbed Tube Fittings for Air and Water

A brass body provides protection against corrosive environments. Fittings have barbs that grip onto tubing.

For technical drawings and 3-D models, click on a part number.

Plugs

Temperature Range: -65° to 75° F
Tubing: Use with firm (Durometer 95A) polyurethane rubber

For Tube ID	Number of Barbs	Material	Max. Pressure	Lg.		Each
0.17"	Multiple	Brass	100 psi @ 72° F	9/16"	000000000	00000
1/4"	Multiple	Brass	100 psi @ 72° F	11/16"	000000000	0000
3/8"	Multiple	Brass	100 psi @ 72° F	13/16"	000000000	0000

Submersible Threaded Breather Vents

Nickel-Plated Brass

Use these vents to maintain consistent pressure as temperatures fluctuate by allowing air to flow through sealed enclosures. All have a hydrophobic and oleophobic filter membrane that blocks moisture and contamination from particle buildup.

Nickel-plated brass vents stand up to corrosive environments better than nylon and polycarbonate vents. They’re also durable, which means you won’t have to replace them as often.

For technical drawings and 3-D models, click on a part number.

Metric
Thread Size	Thread Pitch, mm	For Hole Dia.	Head Dia.	Environment	Environmental Rating	Features		Each
Nickel-Plated Brass
M12	1.5	1/2"	3/4"	Damp, Dusty, Submersible, Washdown	IP68, IP66	Gasket	0000000	000000
M16	1.5	5/8"	3/4"	Damp, Dusty, Submersible, Washdown	IP68, IP66	Gasket	0000000	00000
M20	1.5	13/16"	15/16"	Damp, Dusty, Submersible, Washdown	IP68, IP66	Gasket	0000000	00000

Self-Draining Breather Vents

Minimize moisture buildup in enclosures. Also known as drain plugs, these breather vents have a small outlet that allows condensation to drain. They have a silicone O-ring above the threads for a tight seal. Install them at the lowest point of the enclosure. Breather vents meet IP66 for protection in washdown environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.

Brass breather vents have good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

NPT Male
Pipe Size	Max. Temp., °F	Ht.	Dia.	For Use With	Environmental Rating		Each
Brass Body and Fitting
1/2	320°	15/16"	1"	Air	IEC Zone 1 Groups IIC, IIB, IIA, IEC Zone 21 Groups IIIC, IIIB, IIIA, IP66, NEMA 4X	0000000	000000
1/4	320°	15/16"	11/16"	Air	IP66, NEMA 4X	0000000	00000

Breather Vents

Protect against excess vacuum and pressure in cylinders, gear boxes, enclosures, manifolds, and tanks. You can also use these breather vents to block debris from entering equipment.

Style H has a Buna-N O-ring for extra protection against leaks.

For technical drawings and 3-D models, click on a part number.

NPT Male
Style	Pipe Size	Thread Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns		Each
Brass Body and Fitting
A	1/16	__	13 scfm @ 100 psi	150	300°	1/2"	Air, Inert Gas	90	0000000	00000
UNF Male
Brass Body and Fitting
A	__	10-32	6 scfm @ 100 psi	150	300°	3/8"	Air, Inert Gas	90	0000000	0000
H	__	10-32	1 scfm @ 100 psi	125	200°	7/16"	Air, Inert Gas	40	0000000	0000

Vented Brass Submersible Cord Grips

Secure cable installed through enclosures in wet environments while venting air to protect electronics from condensation. Vents on these cord grips equalize pressure between the inside and outside of an enclosure, preventing harmful moisture from forming. They are nickel-plated brass, so they resist corrosion. These cord grips are rated IP66 and IP67 for protection from dust, washdown, and temporary submersion.

For technical drawings and 3-D models, click on a part number.

PG Threads
For Cord OD	For Knockout Trade Size	Thread Size	Temperature Range, °F	Features	Environmental Rating	Specifications Met		Each
0.16"-0.31"	PG-7	PG-7	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	000000
0.16"-0.31"	PG-9	PG-9	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
0.2"-0.39"	PG-11	PG-11	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
0.24"-0.47"	PG-13.5	PG-13.5	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
Metric Threads
0.16"-0.31"	M12	M12	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
0.16"-0.31"	M16	M16	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
0.2"-0.39"	M16	M16	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000
0.24"-0.47"	M20	M20	0° to 210°	Nickel-Plated Brass Locknut, Rubber O-Ring	IP66, IP67	CSA Certified, CE Marked, CSA-US Certified, C-UL Recognized Component, DNV-GL Type Approved, UL Recognized Component, VDE Certified	0000000	00000

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How to Identify and Measure Fittings

About Noise, Filtration, and Flow Ratings

About Fire-Fighting Hose Threads

Threaded Standoff Caps

Metal Cam-and-Groove Hose Couplings for Water

Threaded Hose Fittings for Compressed Gas

Rocker-Lug Fire Hydrant Caps and Plugs

Metal Garden Hose Fittings

Brass Low-Pressure Barbed Tube Fittings for Air and Water

Submersible Threaded Breather Vents

Self-Draining Breather Vents

Breather Vents

Vented Brass Submersible Cord Grips