Unthreaded Flanges | McMaster-Carr

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2,441 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

Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

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

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

SAE High-Pressure Iron and Steel Unthreaded Pipe Flanges

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

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

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

Add an access point to fire water mains and sprinkler systems

Stainless Steel Unthreaded Pipe and Fittings

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

High-Pressure Stainless Steel Unthreaded Pipe Flanges

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

Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in low-pressure lines

SAE High-Pressure Stainless Steel Unthreaded Pipe Flanges

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

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

CPVC Pipe Flanges for Chemicals

CPVC Pipe Flanges for Chemicals

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

Fiberglass Pipe Flanges for Chemicals

Fiberglass Pipe Flanges for Chemicals

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

UV-Resistant Polypropylene Pipe Flanges for Chemicals

UV-Resistant Polypropylene Pipe Flanges for Chemicals

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

High-Purity Polypropylene Pipe Flanges for Drinking Water

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

Easy-Access CPVC Pipe Flanges for Chemicals

Easy-Access CPVC Pipe Flanges for Chemicals

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

Aluminum Unthreaded Pipe and Fittings

Low-Pressure Aluminum Unthreaded Pipe Flanges

Low-Pressure Aluminum Unthreaded Pipe Flanges

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

Drain, Waste, and Vent Pipe and Fittings

Drain, Waste, and Vent ABS Pipe Fittings for Chemicals

Drain, Waste, and Vent ABS Pipe Fittings for Chemicals

An economical choice for gravity-flow chemical-waste systems; also known as Schedule 40

Drain, Waste, and Vent ABS Pipe Flanges for Chemicals

Drain, Waste, and Vent ABS Pipe Flanges for Chemicals

Add an access point in gravity-flow chemical-waste systems

Drain, Waste, and Vent Standard-Wall PVC Pipe Flanges for Water

Drain, Waste, and Vent Standard-Wall PVC Pipe Flanges for Water

Create an access point in gravity-flow drain, waste, and vent lines; also known as Schedule 40

Brass and Bronze Unthreaded Pipe and Fittings

Low-Pressure Brass and Bronze Unthreaded Pipe Flanges

Low-Pressure Brass and Bronze Unthreaded Pipe Flanges

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

Other Products

Hose

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Pipe Stub Ends

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

Bellows

Prevent dust and debris from damaging moving parts

Duct and Fittings

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

Pipe Expansion Joints

Pipe Expansion Joints

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

Slip-On Framing Rail Mounts

Slip-On Framing Rail Mounts

Mount slip-on framing structures to floors, walls, and ceilings

Tube Fittings

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

Floor, Wall, and Ceiling Plates

Floor, Wall, and Ceiling Plates

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

Hose Fittings

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

Orifice Valves

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

Pipe Bleed Rings

Pipe Bleed Rings

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

Pipe Flashings

Create watertight seals around vent pipes on roofs, even if they expand, contract, and vibrate

Chimney Storm Collars

Chimney Storm Collars

Pair with chimney roof flashing to prevent leaks where chimneys pass through roofs

Pipe Traps

Create a seal that prevents the backflow of gas

Buffing and Polishing Wheel Flanges

Buffing and Polishing Wheel Flanges

Connect wheels with a center hub to bench grinders and buffers

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Pipe Flashing Seals

Pipe Flashing Seals

Slide over roof flashings for a watertight seal without the need for caulk

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