Aluminum Tube Caps | McMaster-Carr

Clear All

	Material Material

6061 Aluminum

356 Aluminum

	For Pipe Material For Pipe Material

Aluminum

	For Shape For Shape


Square	Round

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	Type Type


Cap	Plug

Flange

	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

	Thread Size Thread Size

	Cap Type Cap Type


Push On	Screw On

	Profile Profile

	Straight

	Drive Style Drive Style


External Hex	External Square

Hex	Square

	For Use With For Use With

	Connection Style Connection Style

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

DFARS Specialty Metals
COTS-Exempt

	For Pipe Size For Pipe Size

1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6

	Inside Height Inside Height

	For Pipe Schedule For Pipe Schedule


40	80

	Length Length

	Maximum Temperature Maximum Temperature

	Connection Type Connection Type


Tube	Pipe

	Plug Type Plug Type


Push In	Screw In

	For Tube Material For Tube Material

Aluminum

View catalog pages (12)

Forward

How can we improve?

220 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 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.

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.

Threaded Round Plugs for Straight-Thread Pipe

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

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.

Pipe, Tubing, Hose, and Fittings

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°.

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 Class 125 flanges.

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.

High-Pressure Aluminum Threaded Pipe Fittings

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

Medium-Pressure Aluminum Threaded Pipe Fittings

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

How to Identify and Measure Fittings

Caps and Plugs

Metal Square Plugs

Threaded Round Plugs for 37° Flared Tube

Threaded Round Plugs for Straight-Thread Pipe

Metal Round Caps

Threaded Caps

Threaded Standoff Caps

Pipe, Tubing, Hose, and Fittings

37° Flared Fittings for Aluminum Tubing

Standard-Wall Butt-Weld AluminumUnthreaded Pipe Fittings

Aluminum Unthreaded Pipe Flanges

Low-Pressure Aluminum Threaded Pipe Fittings

High-Pressure Aluminum Threaded Pipe Fittings

Medium-Pressure Aluminum Threaded Pipe Fittings

Standard-Wall Butt-Weld Aluminum
Unthreaded Pipe Fittings