Reducer Nipples | McMaster-Carr

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2B999

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638 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 Threaded Pipe Fittings

Use these corrosion-resistant fittings in a low-pressure pipe line.

Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Use these fittings in extreme-pressure conditions up to 15,000 psi.

Precision Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

These fittings are made to tighter tolerances than other stainless steel pipe fittings. They are also known as instrumentation fittings.

Thick-Wall Stainless Steel
Threaded Pipe Nipples and Pipe

Typically used with medium- to high-pressure stainless steel threaded pipe fittings.

High-Pressure Stainless
Steel Threaded Pipe Fittings

Use these heavy duty, corrosion-resistant fittings in high-pressure flow applications.

High-Pressure Brass Threaded Pipe Fittings

These brass fittings have the strength to handle high-pressure applications.

High-Pressure Brass Threaded
Pipe Fittings with Sealant

Not only do these brass fittings have the strength to handle high-pressure applications, the male threads have a sealant applied for extra protection against leaks.

High-Pressure Brass Threaded
Pipe Nipples and Pipe with Sealant

Typically used with high-pressure brass and bronze threaded pipe fittings.

High-Pressure Brass Threaded
Pipe Fittings for Drinking Water

Use these heavy-duty brass fittings for high-pressure drinking water applications.

High-Pressure Plated Brass Threaded Pipe Fittings

The plating on these brass fittings creates a shiny finish and provides extra protection in corrosive environments. Fittings have the strength to handle high-pressure applications.

High-Pressure Plated Brass
Threaded Pipe Nipples and Pipe

Typically used with high-pressure brass and bronze threaded pipe fittings.

Extreme-Pressure Brass Threaded Pipe Fittings

Extreme pressures are no problem for these heavy-duty brass fittings.

Precision Extreme-Pressure
Brass Threaded Pipe Fittings

Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer.

Compact Extreme-Pressure
Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces.

Compact Precision Extreme-Pressure
Steel Threaded Pipe Fittings

Made to tighter tolerances than other steel pipe fittings, these are also known as instrumentation fittings.

Thick-Wall Galvanized Iron and Steel
Threaded Pipe Nipples and Pipe

Typically used with medium-pressure galvanized iron and steel threaded pipe fittings. Also known as Schedule 80.

Miniature Medium-Pressure
Aluminum Threaded Pipe Fittings

Their small size makes these miniature fittings a good choice for cramped, confined spaces.

Plastic Pipe and Pipe Fittings

UV-Resistant Polypropylene
Pipe Fittings for Chemicals

Made of polypropylene, these fittings won’t deteriorate when exposed to the damaging effects of ultraviolet light and are suitable to use outdoors. They have the chemical resistance to withstand acids, solvents, and other harsh substances.

Crack-Resistant PFA Pipe Fittings for Chemicals

Not only do these PFA fittings have the chemical resistance to handle acid and salt water, they also have better crack resistance than other plastic pipe fittings for chemicals. They are commonly used in high-purity chemical flow processes, such as semiconductor and clean room applications.

Thick-Wall Plastic Pipe Fittings for Water

Connect these fittings to Schedule 80 pipe. With thicker, stronger walls than standard-wall fittings, they can handle heavy duty supply applications, such as water processing, wastewater treatment, and irrigation.

Plastic Pipe Fittings for Oil

Made of corrosion-resistant plastic, these fittings won’t deteriorate when used in oil applications. They have high strength and impact resistance.

Plastic Pipe Fittings for Gasoline

Use these plastic fittings to connect gasoline fuel lines to machines and equipment. They have excellent corrosion resistance as well as high strength and impact resistance.

Metal Pipe and Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Extreme-Pressure StainlessSteel Threaded Pipe Fittings

Precision Extreme-Pressure StainlessSteel Threaded Pipe Fittings

Thick-Wall Stainless SteelThreaded Pipe Nipples and Pipe

High-Pressure StainlessSteel Threaded Pipe Fittings

High-Pressure Brass Threaded Pipe Fittings

High-Pressure Brass ThreadedPipe Fittings with Sealant

High-Pressure Brass ThreadedPipe Nipples and Pipe with Sealant

High-Pressure Brass ThreadedPipe Fittings for Drinking Water

High-Pressure Plated Brass Threaded Pipe Fittings

High-Pressure Plated BrassThreaded Pipe Nipples and Pipe

Extreme-Pressure Brass Threaded Pipe Fittings

Precision Extreme-PressureBrass Threaded Pipe Fittings

Compact Extreme-PressureSteel Threaded Pipe Fittings

Compact Precision Extreme-PressureSteel Threaded Pipe Fittings

Thick-Wall Galvanized Iron and SteelThreaded Pipe Nipples and Pipe

Miniature Medium-PressureAluminum Threaded Pipe Fittings

Plastic Pipe and Pipe Fittings

UV-Resistant PolypropylenePipe Fittings for Chemicals

Crack-Resistant PFA Pipe Fittings for Chemicals

Thick-Wall Plastic Pipe Fittings for Water

Plastic Pipe Fittings for Oil

Plastic Pipe Fittings for Gasoline

Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Precision Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Thick-Wall Stainless Steel
Threaded Pipe Nipples and Pipe

High-Pressure Stainless
Steel Threaded Pipe Fittings

High-Pressure Brass Threaded
Pipe Fittings with Sealant

High-Pressure Brass Threaded
Pipe Nipples and Pipe with Sealant

High-Pressure Brass Threaded
Pipe Fittings for Drinking Water

High-Pressure Plated Brass
Threaded Pipe Nipples and Pipe

Precision Extreme-Pressure
Brass Threaded Pipe Fittings

Compact Extreme-Pressure
Steel Threaded Pipe Fittings

Compact Precision Extreme-Pressure
Steel Threaded Pipe Fittings

Thick-Wall Galvanized Iron and Steel
Threaded Pipe Nipples and Pipe

Miniature Medium-Pressure
Aluminum Threaded Pipe Fittings

UV-Resistant Polypropylene
Pipe Fittings for Chemicals