Pipe Connecting Couplings | McMaster-Carr

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System of Measurement

Pipe Size

Fitting Type

Expansion Joint

Reducing Adapter

Material

Stainless Steel

Shape

Double-Outlet Elbow

Single-Outlet Elbow

Fitting Connection

Spec Image

Spec Image

Push-to-Connect Grip Ring

Quick Disconnect

Socket Fusion Weld

Spec Image

Worm-Drive Quick Clamp

Pipe Schedule

Gender

Pipe Material

Stainless Steel

Threading

Threaded on Both Ends

Threaded on One End

Thread Type

Length

Color

For Use With

Calcium Chloride

Connects To

Corrugated Pipe

Flange Material

Stainless Steel

ID

OD

Maximum Pressure @ Temperature

15 psi @ 72° F

20 psi @ 72° F

30 psi @ 72° F

35 psi @ 72° F

40 psi @ 72° F

45 psi @ 72° F

50 psi @ 72° F

55 psi @ 72° F

60 psi @ 72° F

65 psi @ 72° F

70 psi @ 72° F

80 psi @ 72° F

90 psi @ 72° F

95 psi @ 72° F

100 psi @ 72° F

110 psi @ 72° F

120 psi @ 72° F

Maximum Temperature

Less than 150° F

150° F to 199° F

200° F to 249° F

250° F to 499° F

500° F or greater

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

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Minimum Temperature

-100° F or less

-99° F to -50° F

-49° F to -25° F

-24° F to -1° F

Greater than 0° F

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3,615 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

Galvanized Iron and Steel Unthreaded Pipe and Fittings

Low-Pressure Galvanized Iron and Steel Clamp-On Pipe Fittings

Low-Pressure Galvanized Iron and Steel Clamp-On Pipe Fittings

Tighten the bolts to join pipe in air, vacuum, and gravity-flow systems up to 15 psi

Low-Pressure Galvanized Iron and Steel Compression Pipe Fittings

Low-Pressure Galvanized Iron and Steel Compression Pipe Fittings

Tighten by hand for quick, leak-free connections in lines up to 125 psi

Drain, Waste, and Vent Pipe and Fittings

Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water

Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water

Clamp onto pipe for a strong seal and easy assembly

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 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

Flame-Retardant Drain, Waste, and Vent Polypropylene Pipe Fittings for Chemicals

Flame-Retardant Drain, Waste, and Vent Polypropylene Pipe Fittings for Chemicals

UL rated for flame retardance and withstand organic solvents that would dissolve CPVC fitings

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Fittings for Chemicals

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Fittings for Chemicals

UL rated for flame retardance and NSF certified for use in gravity-flow corrosive-waste systems

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

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

The industry standard for gravity-flow drain, waste, and vent applications; known as Schedule 40

Underground Drain, Waste, and Vent PVC Pipe Fittings for Water

Underground Drain, Waste, and Vent PVC Pipe Fittings for Water

Thin walls give extra room for high-flow applications, such as underground storm drainage lines

Drain, Waste, and Vent ABS Pipe Nipples and Pipe for Chemicals

Drain, Waste, and Vent ABS Pipe Nipples and Pipe for Chemicals

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

Easy-Access Underground Drain, Waste, and Vent Polyethylene Pipe Nipples and Pipe for Water

Easy-Access Underground Drain, Waste, and Vent Polyethylene Pipe Nipples and Pipe for Water

Snap onto fittings to quickly connect without cement

Underground Drain, Waste, and Vent PVC Pipe Nipples and Pipe for Water

Underground Drain, Waste, and Vent PVC Pipe Nipples and Pipe for Water

Thin walls give extra room for high-flow applications, such as underground storm drainage lines

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Nipples and Pipe for Chemicals

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Nipples and Pipe for Chemicals

UL rated for flame retardance and NSF certified for use in corrosive-waste gravity-flow systems

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 PVC Pipe Fittings for Joining Metal to Plastic

Drain, Waste, and Vent PVC Pipe Fittings for Joining Metal to Plastic

Connect PVC waste pipe to cast iron pipe without adding bulk

Easy-Access Underground Drain, Waste, and Vent Polyethylene Pipe Fittings for Water

Easy-Access Underground Drain, Waste, and Vent Polyethylene Pipe Fittings for Water

Snap onto pipe to quickly connect without cement

Flame-Retardant Drain, Waste, and Vent Polypropylene Pipe Nipples and Pipe for Chemicals

Flame-Retardant Drain, Waste, and Vent Polypropylene Pipe Nipples and Pipe for Chemicals

UL rated for flame retardance and withstand organic solvents that would dissolve CPVC pipe

Cut-to-Length Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water

Cut-to-Length Drain, Waste, and Vent PVC Clamp-On Pipe Fittings for Water

Cut to the length you need to connect pipe up to 100 ft. apart

Iron and Steel Unthreaded Pipe and Fittings

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

Low-Pressure Iron and Steel Press-Socket Pipe Fittings

Low-Pressure Iron and Steel Press-Socket Pipe Fittings

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

FM-Approved Medium-Pressure Iron and Steel Grooved-End Pipe Fittings

FM-Approved Medium-Pressure Iron and Steel Grooved-End Pipe Fittings

Clamp to pipe for quick access to fire water mains and sprinkler systems; known as Victaulic fittings

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

Plastic Pipe and Fittings

Standard-Wall Plastic Pipe Fittings for Water

Standard-Wall Plastic Pipe Fittings for Water

The industry standard for low-pressure water lines; also known as Schedule 40

CPVC Pipe Fittings for Chemicals

CPVC Pipe Fittings for Chemicals

Withstand salt solutions, acids, and other harsh substances

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

Plastic Pipe Fittings for Oil

Plastic Pipe Fittings for Oil

Won’t deteriorate when exposed to oil

Fiberglass Pipe Fittings for Chemicals

Fiberglass Pipe Fittings for Chemicals

Our strongest plastic fittings for chemical-process applications, such as metal treatment

Low-Pressure Plastic Compression Pipe Fittings for Water

Low-Pressure Plastic Compression Pipe Fittings for Water

Tighten by hand for quick, leak-free connections in lines up to 125 psi

UV-Resistant Polypropylene Pipe Fittings for Chemicals

UV-Resistant Polypropylene Pipe Fittings for Chemicals

Withstand sunlight as well as acids, solvents, and other chemicals

Plastic Pipe Fittings for Gasoline

Plastic Pipe Fittings for Gasoline

Connect gasoline fuel lines to machines and equipment

Thick-Wall Plastic Pipe Nipples and Pipe for Water

Thick-Wall Plastic Pipe Nipples and Pipe for Water

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

Flame-Retardant High-Purity PVDF Pipe Fittings for Harsh Chemicals

Flame-Retardant High-Purity PVDF Pipe Fittings for Harsh Chemicals

Handle acids and organic solvents without leaching contaminants into your line

Flame-Retardant PVDF Pipe Fittings for Food and Beverage

Flame-Retardant PVDF Pipe Fittings for Food and Beverage

IEC rated for flame retardance, NSF/ANSI rated for drinking water, and FDA compliant

Plastic Pipe Fittings for Food and Beverage

Plastic Pipe Fittings for Food and Beverage

Won't transfer tastes or odors to food or beverages

Easy-Access CPVC Pipe Fittings for Chemicals

Easy-Access CPVC Pipe Fittings for Chemicals

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

CPVC Pipe Nipples and Pipe for Chemicals

CPVC Pipe Nipples and Pipe for Chemicals

Withstand salt solutions, acids, and other harsh substances; also known as Schedule 80

Standard-Wall Plastic Pipe Nipples and Pipe for Water

Standard-Wall Plastic Pipe Nipples and Pipe for Water

The industry standard for low-pressure water lines; also known as Schedule 40

Clear-View Standard-Wall Plastic Pipe Nipples and Pipe for Water

Clear-View Standard-Wall Plastic Pipe Nipples and Pipe for Water

See inside low-pressure plumbing and water supply lines; also known as Schedule 40

Clear-View Thick-Wall Plastic Pipe Nipples and Pipe for Water

Clear-View Thick-Wall Plastic Pipe Nipples and Pipe for Water

See inside high-pressure plumbing and water supply lines; also known as Schedule 80

UV-Resistant Polypropylene Pipe Nipples and Pipe for Chemicals

UV-Resistant Polypropylene Pipe Nipples and Pipe for Chemicals

Withstand sunlight as well as acids, solvents, and other chemicals; also known as Schedule 80

Plastic Barbed Pipe Fittings for Water

Plastic Barbed Pipe Fittings for Water

Clamp to semi-flexible plastic pipe to connect lines up to 200 psi; also called insert fittings

High-Temperature PTFE Pipe Nipples and Pipe for Harsh Chemicals

High-Temperature PTFE Pipe Nipples and Pipe for Harsh Chemicals

Withstand the widest temperature range of our plastic pipe for chemicals; known as Schedule 80

Clear-View Standard-Wall Plastic Pipe Fittings for Water

Clear-View Standard-Wall Plastic Pipe Fittings for Water

See inside low-pressure plumbing and water supply lines; also known as Schedule 40

High-Temperature PTFE Pipe Fittings for Harsh Chemicals

High-Temperature PTFE Pipe Fittings for Harsh Chemicals

Withstand the widest temperature range of our plastic pipe for chemicals; known as Schedule 80

High-Purity Polypropylene Pipe Fittings for Drinking Water

High-Purity Polypropylene Pipe Fittings for Drinking Water

Polished to an ultra-smooth finish that won't leach contaminants or accumulate particles

Semi-Flexible Plastic Pipe Nipples and Pipe for Water

Semi-Flexible Plastic Pipe Nipples and Pipe for Water

Clamp to barbed plastic fittings to build lines flexible enough to bend around objects

UV-Resistant Standard-Wall Plastic Pipe Fittings for Water

UV-Resistant Standard-Wall Plastic Pipe Fittings for Water

Stand up to sunlight for use in outdoor low-pressure water lines; also known as Schedule 40

Crack-Resistant PFA Pipe Fittings for Harsh Chemicals

Crack-Resistant PFA Pipe Fittings for Harsh Chemicals

Resist cracking in heavy duty chemical flow processes; also known as Schedule 80

Flame-Retardant PVDF Pipe Nipples and Pipe for Harsh Chemicals

Flame-Retardant PVDF Pipe Nipples and Pipe for Harsh Chemicals

UL rated for flame retardance and withstand solvents and other harsh chemicals

UV-Resistant Thick-Wall Plastic Pipe Nipples and Pipe for Water

UV-Resistant Thick-Wall Plastic Pipe Nipples and Pipe for Water

Stand up to sunlight for use in outdoor high-pressure water lines; 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

Flame-Retardant PVDF Pipe Fittings for Harsh Chemicals

Flame-Retardant PVDF Pipe Fittings for Harsh Chemicals

UL rated for flame retardance and withstand solvents and other harsh chemicals

UV-Resistant Standard-Wall Plastic Pipe Nipples and Pipe for Water

UV-Resistant Standard-Wall Plastic Pipe Nipples and Pipe for Water

Stand up to sunlight for use in outdoor low-pressure water lines; also known as Schedule 40

Easy-Access CPVC Pipe Nipples and Pipe for Chemicals

Easy-Access CPVC Pipe Nipples and Pipe for Chemicals

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

Polypropylene Barbed Pipe Fittings for Chemicals

Polypropylene Barbed Pipe Fittings for Chemicals

Clamp to semi-flexible plastic pipe and withstand acids and solvents; also called insert fittings

Flame-Retardant High-Purity PVDF Pipe Nipples and Pipe for Harsh Chemicals

Flame-Retardant High-Purity PVDF Pipe Nipples and Pipe for Harsh Chemicals

Handle acids and organic solvents without leaching contaminants into your line

High-Purity Polypropylene Pipe Nipples and Pipe for Drinking Water

High-Purity Polypropylene Pipe Nipples and Pipe for Drinking Water

Polished to an ultra-smooth finish that won't leach contaminants or accumulate particles

Fiberglass Pipe Nipples and Pipe for Chemicals

Fiberglass Pipe Nipples and Pipe for Chemicals

Our strongest plastic pipe for chemical-process applications, such as metal treatment

Stainless Steel Unthreaded Pipe and Fittings

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

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

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

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

Aluminum Unthreaded Pipe and Fittings

Low-Pressure Aluminum Quick-Connect Pipe Fittings

Low-Pressure Aluminum Quick-Connect Pipe Fittings

Twist onto pipe for quick, sealed connections without threading, soldering, or welding

Other Products

Tube Straights

Join lengths of tube to send contents in one direction

Pipe Expansion Joints

Pipe Expansion Joints

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

Manual On-Off Valves

Manual On-Off Valves

Start and stop flow through a line

Pipe Stub Ends

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

Pipe Traps

Create a seal that prevents the backflow of gas

Pipe Locknuts

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

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