2 Flanges | McMaster-Carr

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System of Measurement

Pipe Size

Material

Compressed Non-Asbestos Synthetic Fiber

Copper

Fiberglass

Graphite

Hastelloy C276 Nickel

Fitting Connection

Fitting Type

Pressure Class

Flanged Connection Surface

Flat

O-Ring Groove

Raised

Number of Bolt Holes

Fitting Material

Flange OD

Pipe Schedule

Pipe Material

For Flange Pipe Size

For Use With

Grooved-End Pipe Fittings

Low Stress-to-Seal Flanges

Bolt Circle Diameter

Thread Type

UN/UNF (SAE Straight)

Connects To

Shape

Flange Type

Specifications Met

Maximum Steam Pressure @ Temperature

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

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

RoHS

Compliant

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

REACH

494 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

Stainless Steel Unthreaded Pipe and Fittings

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

33 products

High-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 1,200 psi; also known as Class 300 or Class 600 flanges

20 products

SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges

Add an access point in hydraulic lines up to 5,000 psi; also known as Code 61 SAE hydraulic flanges

2 products

Stainless Steel Threaded Pipe and Fittings

Low-Pressure Stainless Steel Threaded Pipe Flanges

Create an access point in lines up to 290 psi; also known as Class 150 flanges

22 products

High-Pressure Stainless Steel Threaded Pipe Flanges

Create an access point in lines up to 1,200 psi; also known as Class 300 or Class 600 flanges

4 products

SAE High-Pressure Stainless Steel Threaded Two-Piece Pipe Flanges

Pair with an adapter for a custom access point in hydraulic lines up to 5,000 psi

3 products

SAE High-Pressure Stainless Steel Threaded Pipe Flanges

Add an access point in high-pressure hydraulic lines; also known as Code 61 SAE hydraulic flanges

2 products

Low-Pressure Stainless Steel Threaded Pipe Fittings

For pressures up to 500 psi

1 product

Iron and Steel Unthreaded Pipe and Fittings

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

19 products

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

10 products

SAE High-Pressure Iron and Steel Unthreaded Pipe Flanges

Add an access point in hydraulic lines up to 3,000 psi; also known as Code 61 SAE hydraulic flanges

3 products

Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in extreme-pressure lines; also known as Class 1500 flanges

4 products

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

Add an access point to fire water mains and sprinkler systems

1 product

Iron and Steel Threaded Pipe and Fittings

Low-Pressure Iron and Steel Threaded Pipe Flanges

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

12 products

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

2 products

Low-Pressure Iron and Steel Threaded Pipe Fittings

For pressures up to 300 psi

20 products

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

Add an access point to fire water mains and sprinkler systems

4 products

Extreme-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in extreme-pressure lines; also known as Class 1500 flanges

1 product

SAE High-Pressure Iron and Steel Threaded Pipe Flanges

Add an access point in hydraulic lines up to 3,000 psi; also known as Code 61 SAE hydraulic flanges

3 products

SAE High-Pressure Iron and Steel Threaded Two-Piece Pipe Flanges

Pair with an adapter to build a custom access point in hydraulic lines up to 3,000 psi

3 products

SAE Extreme-Pressure Iron and Steel Threaded Two-Piece Pipe Flanges

Pair with an adapter for a custom access point in hydraulic lines up to 6,000 psi

3 products

Plastic Pipe and Fittings

Thick-Wall Plastic Pipe Flanges for Water

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

9 products

CPVC Pipe Flanges for Chemicals

Add an access point to lines that withstand chemicals; also known as Class 150 flanges

8 products

UV-Resistant Polypropylene Pipe Flanges for Chemicals

Add an access point to lines that withstand sunlight and chemicals; also known as Class 150 flanges

3 products

High-Purity Polypropylene Pipe Flanges for Drinking Water

Add an access point to lines that won't leach contaminants; also known as Class 150 flanges

2 products

Easy-Access CPVC Pipe Flanges for Chemicals

Connect to pipe with a clamp for quick access to chemical-process lines; known as Victaulic flanges

1 product

Flame-Retardant PVDF Pipe Flanges for Harsh Chemicals

Add an access point to lines that resist spreading fire and withstand harsh chemicals

2 products

Fiberglass Pipe Flanges for Chemicals

Create an access point in heavy duty chemical-process lines, such as for plating solution

4 products

Spin-Weld Plastic Pipe Fittings for Water

Melt into plastic tanks, walls, and panels for a leak-free connection without gaskets or sealants

2 products

Aluminum Threaded Pipe and Fittings

Low-Pressure Aluminum Threaded Pipe Flanges

Create an access point in lines up to 150 psi; also known as Class 125 flanges

4 products

Low-Pressure Aluminum Threaded Pipe Fittings

For pressures up to 250 psi

3 products

Aluminum Unthreaded Pipe and Fittings

Low-Pressure Aluminum Unthreaded Pipe Flanges

Create an access point in lines up to 150 psi; also known as Class 125 flanges

3 products

Galvanized Iron and Steel Threaded Pipe and Fittings

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

2 products

High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Create an access point in high-pressure lines; also known as Class 300 flanges

1 product

Brass and Bronze Threaded Pipe and Fittings

Low-Pressure Brass and Bronze Threaded Pipe Flanges

Create an access point in lines up to 225 psi; also known as Class 150 flanges

2 products

Brass and Bronze Unthreaded Pipe and Fittings

Low-Pressure Brass and Bronze Unthreaded Pipe Flanges

Create an access point in lines up to 225 psi; also known as Silbraze flanges

3 products

Other Products

Pipe Stub Ends

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

18 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

3 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

107 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

8 products

Pipe Expansion Joints

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

24 products

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

4 products

Hex Head Screws

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

21 products

Urinal Flanges

Connect a urinal to your drainage system

2 products

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

40 products

Hydraulic Tank Pipe Suction Flanges

Seal pipes passing through top plates of hydraulic tanks

1 product

Pipe Bleed Rings

Access inside a pipe line to vent pressure, drain liquid, and take samples

6 products

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

6 products

Floor, Wall, and Ceiling Plates

Add a finishing touch around protruding pipes; also known as escutcheons

3 products

Leak-Detecting Pipe Flange Covers

Wrap around pipe flanges to show when there's a leak and contain it

5 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

6 products