Tube Couplings | McMaster-Carr

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45,107 Products

Fluid Handling

Tube Fittings

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

15,643 products

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

145 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

366 products

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

260 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

396 products

Tube Fitting Sleeves

Pair with nuts and fittings to form a secure connection on tubing

316 products

Tube Fitting Rings

Prevent leaks at tubing connection points

33 products

Tube Fitting Sleeve and Nut Kits

Everything you need to create a tight seal between a metal tube and a Yor-Lok fitting

31 products

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

12,691 products

Pipe Nipples and Pipe

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

7,398 products

Pipe Fitting Clamps

Connect easy-access and grooved-end pipe fittings to pipe

20 products

Expansion Joints

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

159 products

Pipe Bushings

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

12 products

Hose Fittings

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

6,152 products

Hose End Plugs

Insert into the ends of hose to keep out dirt and debris

41 products

Tube Repair Clamps

Mend small holes, cracks, and full-circle breaks in tubing without dismantling your system

18 products

Hose Crimpers

Crimp ferrules onto hose to secure fittings

11 products

Building and Machinery Hardware

Slip-On Framing Connectors

Tighten onto slip-on framing rails to build guards, railings, and racks

246 products

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

171 products

Flush-Fit Framing and Fittings

Create smooth stair and platform railings by sliding fittings into rails and tightening the screws

7 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

29 products

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Lubricating

Grease Fitting Adapters

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

41 products

Fastening and Joining

Brazing Rings

Snap into metal pipe and tubing to form leak-resistant joints more quickly than with hand-fed alloys

11 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products

Facility and Grounds Maintenance

Faucet Spout Thread Adapters

Connect the female end of your garden hose to a faucet spout

4 products