5 Pipe Size Pipe Flanges | McMaster-Carr

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System of Measurement

Pipe Size

Fitting Connection

Spec Image

Spec Image

Material

Stainless Steel

Pressure Class

Fitting Type

Expansion Joint

Pipe Schedule

Flange OD

Bolt Circle Diameter

Number of Bolt Holes

Flanged Connection Surface

Fitting Material

For Use With

Dissimilar Metals

Low Stress-to-Seal Flanges

Nonabrasive Slurries

Hydraulic Fluid

Shape

Ring with Bolt Holes

Pipe Material

Connects To

Maximum Steam Pressure @ Temperature

150 psi @ 300° F

230 psi @ 300° F

300 psi @ 300° F

125 psi @ 350° F

For Fitting Schedule

Bolt Hole Diameter

Gender

Specifications Met

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

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119 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Pipe and Fittings

Iron and Steel Unthreaded Pipe and Fittings

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

High-Pressure Iron and Steel Unthreaded Pipe Flanges

High-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 1,400 psi; also known as Class 300 or Class 600 flanges

Iron and Steel Threaded Pipe and Fittings

Low-Pressure Iron and Steel Threaded Pipe Flanges

Low-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 285 psi; also known as Class 150 flanges

High-Pressure Iron and Steel Threaded Pipe Flanges

High-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 1,400 psi; also known as Class 300 or Class 600 flanges

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

Add an access point to fire water mains and sprinkler systems

Plastic Pipe and Fittings

Thick-Wall Plastic Pipe Flanges for Water

Thick-Wall Plastic Pipe Flanges for Water

Create an access point in high-pressure water supply lines; also known as Class 150 flanges

Galvanized Iron and Steel Threaded Pipe and Fittings

Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 285 psi; also known as Class 150 flanges

Other Products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Pipe Expansion Joints

Pipe Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

Toilet Mounts

Secure toilet components with flanges and hardware kits

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)