Class 6000 Couplings | McMaster-Carr

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278 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

Extreme-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

The strongest socket-connect fittings we offer, these heavy duty forged fittings are also known as Pressure Class 6000.

Extra-Thick-Wall Stainless Steel Unthreaded Pipe

Typically used with extreme-pressure stainless steel unthreaded pipe fittings.

High-Pressure Steel Threaded Pipe Flanges

Also known as Pressure Class 1500 steel flanges, these have the strength to handle high pressures.

Extreme-Pressure Steel Threaded Pipe Fittings

The strongest steel fittings we offer, these can withstand extreme-pressure applications.

Super-Thick-Wall Steel
Threaded Pipe Nipples and Pipe

Typically used with extreme-pressure iron and steel threaded pipe fittings. Also known as Schedule XXH.

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Also known as Pressure Class 6000 fittings, these heavy duty forged fittings are the strongest steel fittings we offer.

Super-Thick-Wall Steel Unthreaded Pipe

Typically used with extreme-pressure iron and steel unthreaded pipe fittings. Pipe is also known as Schedule XXH .

Extreme-Pressure Steel Unthreaded Pipe Flanges

For excellent strength in extreme-pressure applications, choose these heavy duty Pressure Class 1500 flanges.

Metal Pipe and Pipe Fittings

Extreme-Pressure Socket-ConnectStainless Steel Unthreaded Pipe Fittings

Extra-Thick-Wall Stainless Steel Unthreaded Pipe

High-Pressure Steel Threaded Pipe Flanges

Extreme-Pressure Steel Threaded Pipe Fittings

Super-Thick-Wall SteelThreaded Pipe Nipples and Pipe

Extreme-Pressure Socket-ConnectSteel Unthreaded Pipe Fittings

Super-Thick-Wall Steel Unthreaded Pipe

Extreme-Pressure Steel Unthreaded Pipe Flanges

Extreme-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

Super-Thick-Wall Steel
Threaded Pipe Nipples and Pipe

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings