5" OD Flanges | McMaster-Carr

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130 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.

Metal Pipe and Pipe Fittings

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Bolt two same-size flanges together with a gasket to create an access point within a pipe line.

Standard-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

Butt-weld fittings allow for a smooth, flush connection that provides maximum flow.

Thin-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

Also known as Schedule 10 fittings, these are thin, lightweight, and corrosion resistant.

Low-Pressure Stainless
Steel Threaded Pipe Flanges

Also known as Pressure Class 150 flanges, these corrosion-resistant flanges are designed for low-pressure pipe 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.

Low-Pressure Steel Unthreaded
Pipe Flanges for Low Temperatures

Even in temperatures as low as -46°, these A350 LF2 steel flanges won’t become brittle, so they absorb impact better than other low-pressure steel flanges.

FM-Approved Low-Pressure Cast
Iron Unthreaded Pipe Flanges

FM-approved for fire protection applications, these flanges are cast iron, so they're brittle and can be quickly opened by hitting them with a sledge hammer.

Standard-Wall Butt-Weld Steel
Unthreaded Pipe Fittings

Butt-weld fittings allow for a smooth, flush connection that provides maximum flow.

Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings

With thicker, stronger walls than our standard-wall butt-weld pipe fittings, these fittings stand up to your high strength applications.

Low-Pressure Steel Threaded Pipe Flanges

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

Low-Pressure Steel Threaded Pipe
Flanges for Low Temperatures

Use these Pressure Class 150 pipe flanges in low-pressure lines where temperatures drop down to -40° F.

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer.

Low-Pressure Galvanized
Steel Threaded Pipe Flanges

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

Aluminum Unthreaded Pipe Flanges

Use these unthreaded flanges in low-pressure applications. Also known as Pressure Class 125 flanges.

Low-Pressure Aluminum Threaded Pipe Flanges

Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Flanges are aluminum, which is lightweight with good corrosion resistance.

Low-Pressure Brass and
Bronze Threaded Pipe Flanges

Also known as Pressure Class 150 flanges, these brass flanges are designed for low-pressure applications.

Brass and Bronze Unthreaded Pipe Flanges

Bolt these flanges to another same-size flange with a gasket to create an access point within a pipe line. They are also known as Silbraze flanges.

Plastic Pipe and Pipe Fittings

Thick-Wall Plastic Pipe Flanges for Water

Bolt two same-size flanges together with a gasket to create an access point within a line. They are also known as Pressure Class 150 flanges. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water treatment, and irrigation.

CPVC Pipe Flanges for Hot Water

Bolt two same-size flanges together with a gasket to create an access point within a line. They are also known as Pressure Class 150 flanges. Use in high-temperature plumbing and water supply applications up to 200° F.

UV-Resistant Polypropylene
Pipe Flanges for Chemicals

Use these polypropylene flanges in outdoor environments—they resist the damaging effects of ultraviolet light. They have the chemical resistance to stand up to acids, solvents, and other harsh substances. Bolt two same-size flanges together with a gasket to create an access point within a line. Flanges are also known as Pressure Class 150 flanges.

Flame-Retardant PVDF Pipe Flanges for Chemicals

Bolt two same-size flanges together with a gasket to create an access point within a line. Flanges meet UL 94 V-0 for flame retardance to delay the spread of flames to valuable equipment. They are PVDF, which is comparable to Kynar, and has the chemical resistance to stand up to solvents and other harsh substances. Also known as Pressure Class 150 flanges.

Fiberglass Pipe Flanges for Corrosive Chemicals

Flanges have excellent corrosion resistance to handle a wide range of acids and other highly-corrosive chemicals. Use in metal surface treating applications, plating solution lines, and other chemical process applications. They are reinforced with fiberglass layers for better strength and durability than any of our other pipe flanges for chemicals. Bolt two same-size flanges together with a gasket to create an access point within a line.

Expansion Joints with Flanged Ends

The flanged ends on these expansion joints rotate for easy bolt hole alignment during installation.

Chemical-Resistant Expansion
Joints with Flanged Ends

The PTFE body on these expansion joints has a super-smooth surface that stands up to corrosive chemicals.

Expansion Joints with Sealing
Flanged Ends for Plastic Pipe

Expansion Joint Reducers with Flanged Ends

Connect different pipe sizes in your line while adding a point of flexibility between them. These expansion joints absorb movement between two connected pipes to reduce stress, vibration, and noise.

Expansion Joints with Flanged
Ends for High Vibration

These expansion joints have a double-bulb design for extra movement and vibration absorption.

Expansion Joints with Flanged
Ends for Drinking Water

The EPDM lining in these joints meets NSF/ANSI 61 standard for use with drinking water.

Tube Fittings for Metal Tubing

High-Polish Metal Quick-Clamp
Sanitary Tube Fittings

The smooth finish inside these stainless steel quick-clamp fittings makes it easy to remove product residue.

Solder-Connect Fittings for Copper Tubing

Solder these fittings to tubing for a permanent, leak-tight connection. They are also known as sweat fittings.

Metal Pipe and Pipe Fittings

Low-Pressure Stainless SteelUnthreaded Pipe Flanges

Standard-Wall Butt-Weld StainlessSteel Unthreaded Pipe Fittings

Thin-Wall Butt-Weld StainlessSteel Unthreaded Pipe Fittings

Low-Pressure StainlessSteel Threaded Pipe Flanges

Low-Pressure Steel Unthreaded Pipe Flanges

Low-Pressure Steel UnthreadedPipe Flanges for Low Temperatures

FM-Approved Low-Pressure CastIron Unthreaded Pipe Flanges

Standard-Wall Butt-Weld SteelUnthreaded Pipe Fittings

Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings

Low-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Threaded PipeFlanges for Low Temperatures

FM-Approved Low-PressureCast Iron Threaded Pipe Flanges

Low-Pressure GalvanizedSteel Threaded Pipe Flanges

Aluminum Unthreaded Pipe Flanges

Low-Pressure Aluminum Threaded Pipe Flanges

Low-Pressure Brass andBronze Threaded Pipe Flanges

Brass and Bronze Unthreaded Pipe Flanges

Plastic Pipe and Pipe Fittings

Thick-Wall Plastic Pipe Flanges for Water

CPVC Pipe Flanges for Hot Water

UV-Resistant PolypropylenePipe Flanges for Chemicals

Flame-Retardant PVDF Pipe Flanges for Chemicals

Fiberglass Pipe Flanges for Corrosive Chemicals

Expansion Joints with Flanged Ends

Expansion Joints with Flanged Ends

Chemical-Resistant ExpansionJoints with Flanged Ends

Expansion Joints with SealingFlanged Ends for Plastic Pipe

Expansion Joint Reducers with Flanged Ends

Expansion Joints with FlangedEnds for High Vibration

Expansion Joints with FlangedEnds for Drinking Water

Tube Fittings for Metal Tubing

High-Polish Metal Quick-ClampSanitary Tube Fittings

Solder-Connect Fittings for Copper Tubing

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Standard-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

Thin-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

Low-Pressure Stainless
Steel Threaded Pipe Flanges

Low-Pressure Steel Unthreaded
Pipe Flanges for Low Temperatures

FM-Approved Low-Pressure Cast
Iron Unthreaded Pipe Flanges

Standard-Wall Butt-Weld Steel
Unthreaded Pipe Fittings

Low-Pressure Steel Threaded Pipe
Flanges for Low Temperatures

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Low-Pressure Galvanized
Steel Threaded Pipe Flanges

Low-Pressure Brass and
Bronze Threaded Pipe Flanges

UV-Resistant Polypropylene
Pipe Flanges for Chemicals

Chemical-Resistant Expansion
Joints with Flanged Ends

Expansion Joints with Sealing
Flanged Ends for Plastic Pipe

Expansion Joints with Flanged
Ends for High Vibration

Expansion Joints with Flanged
Ends for Drinking Water

High-Polish Metal Quick-Clamp
Sanitary Tube Fittings