Iron Pipe Fitting Plugs | McMaster-Carr

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	Material Material

Iron

Plastic

Steel

	For Pipe Material For Pipe Material

	Type Type


Plug	Cap

Flange

	Drive Style Drive Style


Hex	External Hex

External Square	Square

Slotted

	Thread Type Thread Type

	Pipe Size Pipe Size

1/8
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
8
10
12

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

1 mm

1.5 mm

	For Use With For Use With

	Shape Shape

	Cap/Plug

	For Pipe Schedule For Pipe Schedule


40	80

	Length Length

	Size Size

	Connection Style Connection Style

	Gender Gender

Male

Female

	Pressure Class Pressure Class

	Maximum Pressure Maximum Pressure

	Connection Type Connection Type


Pipe	Hose

	Specifications Met Specifications Met

	Maximum Steam Pressure Maximum Steam Pressure

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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219 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.

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

Low-Pressure Cast Iron Threaded Pipe Fittings

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

Medium-Pressure Iron and Steel Threaded Pipe Fittings

For use in noncorrosive environments, these fittings have better strength than our low-pressure iron and steel pipe fittings.

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.

Low-Pressure Steel Unthreaded Pipe Flanges

Bolt two flanges of the same size together with a gasket to create an access point in a pipe line.

Grooved-End Iron Pipe Fittings

The grooved ends on these iron fittings connect to pipe with a clamp to easily install piping systems.

Low-Pressure Clamp-On Connectors
for Drain, Waste, and Vent

Twist-Claw Hose Couplings for Air and Water

Couplings have an identical claw-style head that connects to another twist-claw hose coupling with a quarter twist.

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How to Identify and Measure Fittings

Pipe and Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

Low-Pressure Cast Iron Threaded Pipe Fittings

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Medium-Pressure Iron and Steel Threaded Pipe Fittings

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Low-Pressure Steel Unthreaded Pipe Flanges

Grooved-End Iron Pipe Fittings

Low-Pressure Clamp-On Connectors
for Drain, Waste, and Vent

Twist-Claw Hose Couplings for Air and Water

Twist-Claw Hose Couplings for Air and Water

How to Identify and Measure Fittings

Pipe and Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

Low-Pressure Cast Iron Threaded Pipe Fittings

Low-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Medium-Pressure Iron and Steel Threaded Pipe Fittings

Medium-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Low-Pressure Steel Unthreaded Pipe Flanges

Grooved-End Iron Pipe Fittings

Low-Pressure Clamp-On Connectorsfor Drain, Waste, and Vent

Twist-Claw Hose Couplings for Air and Water

Twist-Claw Hose Couplings for Air and Water

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Low-Pressure Clamp-On Connectors
for Drain, Waste, and Vent