McMaster-Carr

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	Material Material

Steel

Iron

	For Pipe Material For Pipe Material

Steel

	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

	Type Type


Flange	Adapter

Cap	Reducing Adapter

Reducer

	Connection Style Connection Style

	Flanged Connection Surface Flanged Connection Surface


Raised	Flat

O-Ring Groove

	Flange OD Flange OD

	Class Class

	For Use With For Use With

	Maximum Pressure Maximum Pressure

	Bolt Circle Diameter Bolt Circle Diameter

	Thread Type Thread Type

	Number of Bolt Holes Number of Bolt Holes

	For Pipe Schedule For Pipe Schedule


40	80

160	XXH

	Specifications Met Specifications Met

ANSI

ANSI/ASME

ASTM

DIN

Fed. Spec.

International Fuel Gas
Code

ISO

JIS

MSS

SAE

Uniform Mechanical Code

UPC

	For Bolt Diameter For Bolt Diameter

	Connection Type Connection Type

	Pipe

	Shape Shape

	Straight
	Cap/Plug

	Maximum Steam Pressure Maximum Steam Pressure

	Gender Gender

Female

	Bolt Hole Diameter Bolt Hole Diameter

	Fabrication Fabrication

Forged

Cast

Machined

	Finish Finish

Black Coated

Galvanized

Zinc Plated

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492 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 Steel
Threaded Pipe Flanges

These flanges are for low-pressure applications in noncorrosive environments.

Low-Pressure Iron and
Steel Threaded Pipe Fittings

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

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Low-Pressure Galvanized
Steel Threaded Pipe Flanges

The galvanized finish on these Class 150 flanges provides fair corrosion resistance.

Medium-Pressure Steel
Threaded Pipe Flanges

With better strength than our low-pressure steel flanges, these are for use in medium-pressure applications.

Medium-Pressure Galvanized
Steel Threaded Pipe Flanges

Also known as Class 300 flanges, these medium-pressure flanges have a galvanized finish for fair corrosion resistance.

High-Pressure Steel
Threaded Pipe Flanges

Also known as Class 1500 steel flanges, these have the strength to handle high pressures.

High-Pressure Steel
Threaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

High-Pressure Steel Threaded
SAE Two-Piece Pipe Flanges

Combine an adapter with a two-piece pipe flange (sold separately) to build a customized flange connection for noncorrosive environments.

Iron and Steel Unthreaded Pipe and Pipe Fittings

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.

Low-Pressure Press-Connect
Steel Unthreaded Pipe Fittings

Crimp these fittings onto steel pipe to form a tightly sealed connection that’s faster than threading or welding and doesn’t require heat.

High-Pressure Steel
Unthreaded Pipe Flanges

Forged for extra strength, these heavy duty unthreaded flanges can withstand high-pressure applications.

High-Pressure Steel
Unthreaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

Extreme-Pressure Steel
Unthreaded Pipe Flanges

For excellent strength in extreme-pressure applications, choose these heavy duty Class 1500 flanges.

Iron and Steel Pipe Fittings with Flanged Ends

Iron and Steel Pipe
Fittings with Flanged Ends

Bolt the flanged end of these fittings to another same-size flange, pump, or valve with a gasket to create an access point in a pipe line.

Toilet Mounting Flanges

Terms and Conditions and Privacy Policy

How to Identify and Measure Fittings

Iron and Steel Threaded Pipe and Pipe Fittings

Low-Pressure SteelThreaded Pipe Flanges

Low-Pressure Iron andSteel Threaded Pipe Fittings

FM-Approved Low-PressureCast Iron Threaded Pipe Flanges

Low-Pressure GalvanizedSteel Threaded Pipe Flanges

Medium-Pressure SteelThreaded Pipe Flanges

Medium-Pressure GalvanizedSteel Threaded Pipe Flanges

High-Pressure SteelThreaded Pipe Flanges

High-Pressure SteelThreaded SAE Pipe Flanges

High-Pressure Steel ThreadedSAE Two-Piece Pipe Flanges

Iron and Steel Unthreaded Pipe and Pipe Fittings

Low-Pressure SteelUnthreaded Pipe Flanges

Low-Pressure Press-ConnectSteel Unthreaded Pipe Fittings

High-Pressure SteelUnthreaded Pipe Flanges

High-Pressure SteelUnthreaded SAE Pipe Flanges

Extreme-Pressure SteelUnthreaded Pipe Flanges

Iron and Steel Pipe Fittings with Flanged Ends

Iron and Steel PipeFittings with Flanged Ends

Toilet Mounting Flanges

Toilet Mounting Flanges

Low-Pressure Steel
Threaded Pipe Flanges

Low-Pressure Iron and
Steel Threaded Pipe Fittings

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Low-Pressure Galvanized
Steel Threaded Pipe Flanges

Medium-Pressure Steel
Threaded Pipe Flanges

Medium-Pressure Galvanized
Steel Threaded Pipe Flanges

High-Pressure Steel
Threaded Pipe Flanges

High-Pressure Steel
Threaded SAE Pipe Flanges

High-Pressure Steel Threaded
SAE Two-Piece Pipe Flanges

Low-Pressure Steel
Unthreaded Pipe Flanges

Low-Pressure Press-Connect
Steel Unthreaded Pipe Fittings

High-Pressure Steel
Unthreaded Pipe Flanges

High-Pressure Steel
Unthreaded SAE Pipe Flanges

Extreme-Pressure Steel
Unthreaded Pipe Flanges

Iron and Steel Pipe
Fittings with Flanged Ends