3/8 Pipe Size Couplings | McMaster-Carr

Filter by

System of Measurement

Fitting Type

Material

Thread Type

UN/UNF (SAE Straight)

Shape

Gender

Fitting Connection

For Use With

Acetic Acid (White Vinegar)

Acetic Acid (White Vinegar) (5% Concentration)

Acetic Acid (White Vinegar) (10% Concentration)

Acetic Acid (White Vinegar) (20% Concentration)

Connects To

Length

Pipe Material

Maximum Pressure @ Temperature

Tube OD

Pipe Schedule

Pressure Class

Flange Material

Threading

Threaded on Both Ends

Threaded on One End

Unthreaded

Quick-Disconnect Component

Coupling Size

RoHS

Compliant with Exemptions

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

2A991

2B999

EAR99

DFARS Specialty Metals

REACH

5,580 Products

Fluid Handling

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

2,312 products

Hose Fittings

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

675 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

1 product

Tube Fittings

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

1,491 products

Tube Fitting Rings

Prevent leaks at tubing connection points

1 product

Orifice Valves

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

104 products

On-Off Valves

Start and stop flow through a line

430 products

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

11 products

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

1 product

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

14 products

Lubricating

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

2 products

Grease Gun Filler Pump Dispensing Tips

Switch out dispensing tips on grease gun filler pumps

2 products

Electrical Power, Networking, and Controlling

Conduit and Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

7 products

Power Transmission

Shaft Collar Adapters

Sized specifically to adapt standard shaft collars to pipe, creating a tight fit

2 products