McMaster-Carr

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	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
4
5
6
8
10
12

	Type Type


Connector	Adapter

Flange	Union

Reducer	Plug

Cap

	Shape Shape


Straight	90° Elbow

Tee	Cap/Plug

45° Elbow	Cross

	Connection Style Connection Style

	Material Material

Iron

Steel

Stainless Steel

	Finish Finish

Black Coated

Galvanized

	For Use With For Use With

	Maximum Pressure Maximum Pressure

300 psi @ 72° F

740 psi @ 72° F

Not Rated

	For Pipe Schedule For Pipe Schedule


40	80

	Gender Gender

Female

Male

	For Pipe Material For Pipe Material

Steel

Stainless Steel

	Maximum Steam Pressure Maximum Steam Pressure

	Flanged Connection Surface Flanged Connection Surface


Raised	Flat

	Specifications Met Specifications Met

ANSI/ASME

ASTM

MSS

	Flange OD Flange OD

	Bolt Circle Diameter Bolt Circle Diameter

	Body Shape Body Shape


Hex	Square

	Number of Bolt Holes Number of Bolt Holes

	For Bolt Diameter For Bolt Diameter

	Wall Thickness Wall Thickness

	Bolt Hole Diameter Bolt Hole Diameter

	Drive Style Drive Style


External Square	Hex

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477 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.

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 Steel
Threaded Pipe Flanges

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

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.

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
Unthreaded Pipe Flanges

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

High-Pressure Stainless Steel
Unthreaded Pipe Flanges

Use these heavy duty forged flanges for high-pressure applications.

High-Pressure Stainless
Steel Threaded Pipe Flanges

Also known as ANSI flanges.

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How to Identify and Measure Fittings

Metal Pipe and Pipe Fittings

Medium-Pressure Iron andSteel Threaded Pipe Fittings

Medium-Pressure SteelThreaded Pipe Flanges

Medium-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Medium-Pressure GalvanizedSteel Threaded Pipe Flanges

High-Pressure SteelUnthreaded Pipe Flanges

High-Pressure Stainless SteelUnthreaded Pipe Flanges