Metal Tube Fittings | McMaster-Carr

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Molybdenum Disulfide Coated

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Molybdenum Disulfide Coated

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300 Series Stainless Steel

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23,715 Products

Fluid Handling

Tube Fittings

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

12,113 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

349 products

Tube Fitting Sleeves

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

291 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

344 products

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

74 products

Tube Fitting Clamps

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

143 products

Tube End Plugs

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

122 products

Tube End Cap and Plug Kits

Cover or insert into the ends of tube fittings to keep out dirt and debris

2 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

Tubing Flow Stops

Temporarily block water flow to make soldering repairs without waiting for your line to drain

9 products

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

2 products

Hose Fittings

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

5,389 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

24 products

Hose

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

65 products

Hose End Plugs

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

9 products

Manifolds

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

605 products

Pipe and Pipe Fittings

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

786 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

28 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

88 products

Tube Crimpers

Create a leak-tight seal between tubing and fittings without heat or solder

11 products

Pipe Crimper Jaws and Rings

Seal press-connect fittings onto pipe without threading or welding

1 product

Tube Repair Clamps

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

18 products

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

174 products

On-Off Valves

Start and stop flow through a line

465 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

1 product

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

50 products

Orifice Valves

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

2 products

Flow-Adjustment Valves

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

150 products

Diverting Valves

Redirect flow between ports

39 products

Sampling Valves

Drain a small amount of fluid for inspection without disrupting flow

4 products

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

17 products

Strainers

Install next to valves and pumps to catch debris in your line

13 products

Strainer Screens

Replace the screen in your strainer

4 products

Mufflers

Reduce noise and filter exhaust fumes

9 products

Filter Housings

Use with filter cartridges to remove particles from liquid

4 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

229 products

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

403 products

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

217 products

Flush-Fit Framing and Fittings

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

11 products

Press-Fit Framing and Fittings

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

57 products

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

73 products

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

8 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

97 products

Lubricating

Grease Fitting Adapters

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

41 products

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

9 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

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

203 products

Facility and Grounds Maintenance

Faucet Spout Thread Adapters

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

4 products

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 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

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products