Aluminum Dust Caps | McMaster-Carr

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	Material Material

	Body Material Body Material

Aluminum

	Type Type


Cap	Plug

Flange

	Coupling Size Coupling Size

	Pipe Size Pipe Size

1/16
1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
6
8

	Thread Type Thread Type

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

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


Socket	Plug

	For Use With For Use With

	Shape Shape

	Cap/Plug

	Connection Style Connection Style

	Drive Style Drive Style


External Square	External Hex

Hex	Square

	For Pipe Material For Pipe Material

Aluminum

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

DFARS Specialty Metals
COTS-Exempt

	Gender Gender

Female

Male

	Maximum Pressure Maximum Pressure

	Length Length

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

REACH Compliant

	For OD For OD

	For Shape For Shape


Round	Square

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Cap Material Cap Material

Aluminum

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356 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.

Metal Round Caps

More durable than plastic caps, these provide the most protection from abrasion and impact.

Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.

Threaded Standoff Caps

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

Threaded Round Plugs for Straight-Thread Pipe

Seal tube and hose fittings to keep their straight threads protected from contaminants during fabrication and storage.

Threaded Round Plugs for 37° Flared Tube

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage.

Metal Square Plugs

More durable than plastic plugs, these provide the most protection from abrasion and impact. Use them to eliminate sharp edges and create a finished look on metal fence and machine-guard posts. Drive them in place with a hammer for a secure fit.

Pipe, Tubing, Hose, and Fittings

Metal Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

Couplings are metal, which has better durability than plastic cam-and-groove hose couplings. They consist of a plug and a socket that connect and disconnect quickly. Use them if you need frequent access to a line. To connect, insert the plug into the socket and push the levers down.

Metal Cam-and-Groove Hose Couplings for Water

Metal cam-and-groove couplings have better durability than plastic cam-and-groove couplings.

Pin-Lug Fire Hydrant Caps

These caps are the fastest way to close off or access your water line. They have a bracket that snaps into any type of 2 1/2 size female fire hose threads. Tap on one of the pin lugs to remove quickly in an emergency.

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications.

Medium-Pressure Aluminum Threaded Pipe Fittings

Designed for medium-pressure applications, these fittings have better strength than our low-pressure aluminum pipe fittings.

High-Pressure Aluminum Threaded Pipe Fittings

Also known as Pressure Class 3000 fittings, these have the highest pressure rating of all the aluminum pipe fittings we offer.

Standard-Wall Butt-Weld Aluminum
Unthreaded Pipe Fittings

Also known as Schedule 40 fittings, these have thicker walls than our thin-wall aluminum unthreaded pipe fittings.

Aluminum Unthreaded Pipe Flanges

Use these unthreaded flanges in low-pressure applications. Also known as Pressure Class 125 flanges.

37° Flared Fittings for Aluminum Tubing

Also known as JIC (Joint Industrial Council) fittings, these provide a tight seal on tubing that is flared to 37°.

Electrical

Caps for Micro M12 Screw-Together Connectors

Protect screw-together M12 connectors when not in use.

Caps for Mini Connectors

Protect mini connectors when not in use.

Caps for Mil. Spec. Screw-Together Connectors

Protect Mil. Spec. connectors when not in use.

Threaded Hole Plugs

Close off unused threaded holes.

Breather Vents

Lockable Breather Vents with Cap

Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering.

Washdown Weather-Resistant Breather Vents

These breather vents are rated NEMA 6 to withstand periodic submersion in water.