Tube Couplings | McMaster-Carr

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48,324 Products

Fluid Handling

Tube Fittings

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

15,634 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

395 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 and Pipe Fittings

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

23,420 products

Hose Fittings

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

6,130 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

43 products

Building and Machinery Hardware

Slip-On Framing Connectors

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

245 products

Clamp-On Framing Connectors

Two-piece design wraps around rails to modify structures without disassembling 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

Lubricating

Grease Fitting Adapters

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

41 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

Power Transmission

Shaft Collar Adapters

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

12 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 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

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

115 products

Fabricating and Machining

Pipe Groovers

Manually form grooves in pipe ends for on-site installation and maintenance

1 product

Facility and Grounds Maintenance

Neutralization Tanks

Treat corrosive chemicals before they drain into sewer systems

4 products

Faucet Spout Thread Adapters

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

4 products