Steel Hydraulic Pipe Fittings | McMaster-Carr

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System of Measurement

Pipe Size

Material

Stainless Steel

Fitting Type

Reducing Adapter

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Shape

Side-Outlet Elbow

Side-Outlet Tee

Fitting Connection

Pipe Schedule

Gender

Length

For Use With

Pipe Material

Stainless Steel

Threading

Threaded on Both Ends

Threaded on One End

Pressure Class

Connects To

Railroad Tank Car

Tube OD

Maximum Pressure @ Temperature

15 psi @ 72° F

25 psi @ 72° F

30 psi @ 72° F

50 psi @ 72° F

60 psi @ 72° F

75 psi @ 72° F

90 psi @ 72° F

100 psi @ 72° F

120 psi @ 72° F

125 psi @ 72° F

150 psi @ 72° F

170 psi @ 72° F

175 psi @ 72° F

200 psi @ 72° F

220 psi @ 72° F

230 psi @ 72° F

250 psi @ 72° F

OD

Fitting Material

Stainless Steel

Flange Material

Stainless Steel

Specifications Met

British Standard

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

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

How can we improve?

17,018 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 Threaded Pipe and Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

For pressures up to 500 psi

Medium-Pressure Stainless Steel Threaded Pipe Fittings

Medium-Pressure Stainless Steel Threaded Pipe Fittings

For pressures up to 1,000 psi

High-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Stainless Steel Threaded Pipe Fittings

Strong enough for pressures up to 3,000 psi

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

Less than two inches to fit in medium-pressure lines with limited space

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Low-Pressure Stainless Steel Threaded Pipe Fittings with Sealant

Low-Pressure Stainless Steel Threaded Pipe Fittings with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Our strongest stainless steel threaded fittings withstand pressures as high as 15,000 psi

Premium Low-Pressure Stainless Steel Threaded Pipe Fittings

Premium Low-Pressure Stainless Steel Threaded Pipe Fittings

Cast in the U.S. and include certificate with traceable lot number

Premium Medium-Pressure Stainless Steel Threaded Pipe Fittings

Premium Medium-Pressure Stainless Steel Threaded Pipe Fittings

Cast in the U.S. and include certificate with traceable lot number

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe with Sealant

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

Low-Pressure Stainless Steel Threaded Pipe Flanges

Low-Pressure Stainless Steel Threaded Pipe Flanges

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

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

The tightest tolerances of our stainless steel fittings; also called instrumentation fittings

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe Assortments

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe Assortments

Keep multiple lengths of low-pressure pipe nipples and pipe on hand

Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

High-Pressure Stainless Steel Threaded Pipe Flanges

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

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

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

SAE High-Pressure Stainless Steel Threaded Pipe Flanges

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

Iron and Steel Unthreaded Pipe and Fittings

High-Pressure Iron and Steel Socket-Connect Pipe Fittings

High-Pressure Iron and Steel Socket-Connect Pipe Fittings

Easier to weld than butt-weld fittings and withstand pressures up to 3,000 psi

Extreme-Pressure Iron and Steel Socket-Connect Pipe Fittings

Extreme-Pressure Iron and Steel Socket-Connect Pipe Fittings

Our strongest iron and steel unthreaded fittings withstand pressures up to 6,000 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

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

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

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

Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

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 Butt-Weld Pipe Fittings

Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

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

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

Medium-Pressure Iron and Steel Butt-Weld Pipe Fittings

Medium-Pressure Iron and Steel Butt-Weld Pipe Fittings

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

High-Pressure Iron and Steel Clamp-On Pipe Fittings for Drinking Water

High-Pressure Iron and Steel Clamp-On Pipe Fittings for Drinking Water

NSF/ANSI rated for drinking water systems up to 500 psi

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

Mate with flat-surface flanges, pumps, and valves to add an access point in fire-protection systems

Standard-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Standard-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Ultra-Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Ultra-Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Our strongest unthreaded pipe for handling extreme pressures; also known as Schedule XXH

FM-Approved Standard-Wall Iron and Steel Grooved-End Pipe Nipples and Pipe

FM-Approved Standard-Wall Iron and Steel Grooved-End Pipe Nipples and Pipe

Clamp to fittings for quick access to fire water mains and sprinkler systems

Low-Pressure Iron and Steel Compression Pipe Fittings

Low-Pressure Iron and Steel Compression Pipe Fittings

Tighten by hand for quick, leak-free connections in lines up to 200 psi

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

Iron and Steel Threaded Pipe and Fittings

High-Pressure Iron and Steel Threaded Pipe Fittings

High-Pressure Iron and Steel Threaded Pipe Fittings

Strong enough for pressures up to 6,000 psi

Low-Pressure Iron and Steel Threaded Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

For pressures up to 300 psi

Extreme-Pressure Iron and Steel Threaded Pipe Fittings

Extreme-Pressure Iron and Steel Threaded Pipe Fittings

Our strongest iron and steel threaded fittings withstand pressures up to 7,500 psi

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Medium-Pressure Iron and Steel Threaded Pipe Fittings

Medium-Pressure Iron and Steel Threaded Pipe Fittings

For pressures up to 2,000 psi

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

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

Our strongest threaded pipe for handling extreme pressures; also known as Schedule XXH

Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Pair with medium-pressure fittings; also known as Schedule 80

Low-Pressure Iron and Steel Threaded Pipe Flanges

Low-Pressure Iron and Steel Threaded Pipe Flanges

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

Low-Pressure Iron and Steel Threaded Pipe Fittings with Sealant

Low-Pressure Iron and Steel Threaded Pipe Fittings with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

Quick-Tighten Low-Pressure Iron and Steel Threaded Pipe Fittings

Quick-Tighten Low-Pressure Iron and Steel Threaded Pipe Fittings

Tighten both ends at the same time by turning with a wrench

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

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

Connect threaded pipe in fire water mains and sprinkler systems

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe with Sealant

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe with Sealant

Threads have sealant applied for extra leak protection in low-pressure lines; known as Schedule 40

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

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

Pair with high-pressure fittings; also known as Schedule 160

High-Pressure Iron and Steel Threaded Pipe Flanges

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

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

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

Add an access point to fire water mains and sprinkler systems

Quick-Tighten Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Quick-Tighten Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Tighten both ends at the same time by turning with a wrench; also known as Schedule 40

SAE High-Pressure Iron and Steel Threaded Pipe Flanges

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

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

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

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Keep various lengths of low-pressure pipe nipples and pipe on hand

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

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

Extreme-Pressure Iron and Steel Threaded Pipe Flanges

Extreme-Pressure Iron and Steel Threaded Pipe Flanges

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

High-Pressure Iron and Steel Threaded Pipe Fitting Assortments

High-Pressure Iron and Steel Threaded Pipe Fitting Assortments

Keep various sizes of high-pressure caps and plugs on hand

Stainless Steel Unthreaded Pipe and Fittings

High-Pressure Stainless Steel Socket-Connect Pipe Fittings

High-Pressure Stainless Steel Socket-Connect Pipe Fittings

Easier to weld than butt-weld fittings and withstand pressures up to 3,000 psi

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

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

Easy-Access Low-Pressure Stainless Steel Clamp-On Pipe Fittings

Easy-Access Low-Pressure Stainless Steel Clamp-On Pipe Fittings

Turn the T-handle to tighten and loosen without tools

Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

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

Low-Pressure Stainless Steel Clamp-On Pipe Fittings

Low-Pressure Stainless Steel Clamp-On Pipe Fittings

Clamp onto pipe for a strong seal and easy assembly

Standard-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Standard-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Pair with low- and medium-pressure fittings; also known as Schedule 40

Thin-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Thin-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 10

Low-Pressure Stainless Steel Press-Socket Pipe Fittings

Low-Pressure Stainless Steel Press-Socket Pipe Fittings

Crimp onto pipe for a leak-free connection that's faster than threading or welding

Low-Pressure Stainless Steel Compression Pipe Fittings

Low-Pressure Stainless Steel Compression Pipe Fittings

Tighten by hand for quick, leak-free connections in lines up to 200 psi

High-Pressure Stainless Steel Butt-Weld Pipe Fittings

High-Pressure Stainless Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in lines up to 3,000 psi

Low-Pressure Stainless Steel Socket-Connect Pipe Fittings

Low-Pressure Stainless Steel Socket-Connect Pipe Fittings

Easier to weld than butt-weld fittings and withstand pressures up to 300 psi

Extra-Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Extra-Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

The strongest stainless steel pipe we offer for extreme pressures; also known as Schedule 160

Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings

Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings

Our strongest stainless steel unthreaded fittings withstand pressures up to 7,700 psi

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

Galvanized Iron and Steel Threaded Pipe and Fittings

High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Strong enough for pressures up to 3,000 psi

Precision Extreme-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Precision Extreme-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

The tightest tolerances of our iron and steel fittings; also known as instrumentation fittings

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

For pressures up to 300 psi

Drain, Waste, and Vent Pipe and Fittings

Drain, Waste, and Vent Iron and Steel Pipe Fittings

Drain, Waste, and Vent Iron and Steel Pipe Fittings

Durable enough for pipe systems above and below ground; also called no-hub and soil pipe fittings

Drain, Waste, and Vent Iron and Steel Pipe Nipples and Pipe

Drain, Waste, and Vent Iron and Steel Pipe Nipples and Pipe

Durable enough for pipe systems above and below ground; also called no-hub and soil pipe

Plastic Pipe and Fittings

Thick-Wall Plastic Pipe Fittings for Water

Thick-Wall Plastic Pipe Fittings for Water

Withstand heavy duty applications, such as water processing; also known as Schedule 80

Easy-Access UV-Resistant Polypropylene Pipe Fittings for Chemicals

Easy-Access UV-Resistant Polypropylene Pipe Fittings for Chemicals

Clamp onto pipe for quick disassembly and withstand sunlight and harsh chemicals

Other Products

Pipe Repair Clamps

Pipe Repair Clamps

Fix small holes and cracks in pipe without taking your system apart

Tube Fittings

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

Pipe Collars

Clamp pipe passing through floors and walls

Hose Fittings

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

Pipe Locknuts

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

Pipe Traps

Create a seal that prevents the backflow of gas

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

Pipe Stub Ends

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

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

Pipe Bleed Rings

Pipe Bleed Rings

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

Pipe Size Measuring Kits

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

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