Metal Tube Fittings | McMaster-Carr

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Material

Tube Material

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Tube OD

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Compliant with Exemptions

Not Compliant

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Compliant

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Compliant

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Finish

Molybdenum Disulfide Coated

Pipe Material

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Nut Finish

Molybdenum Disulfide Coated

Socket Material

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300 Series Stainless Steel

Plug Material

Inner Ring Material

21,147 Products

Fluid Handling

Tube Fittings

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

11,019 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

332 products

Tube Fitting Sleeves

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

277 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

335 products

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

41 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

109 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

27 products

Tubing Flow Stops

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

9 products

Hose Fittings

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

5,160 products

Hose

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

65 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

24 products

Manifolds

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

604 products

Air Chucks

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

18 products

Pipe and Pipe Fittings

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

516 products

Junction Blocks

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

77 products

Tube Crimping Tools

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

6 products

Pipe Crimping Tools

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

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

2 products

Check Valves

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

36 products

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

50 products

On-Off Valves

Start and stop flow through a line

292 products

Orifice Valves

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

2 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

8 products

Building and Machinery Hardware

Slip-On Framing and Fittings

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

403 products

Clamp-On Framing and Fittings

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

217 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

72 products

Weld-Together Framing and Fittings

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

8 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

10 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

Fastening and Joining

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

1 product

Brazing Rings

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

11 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

118 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Facility and Grounds Maintenance

Faucet Spout Thread Adapters

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

4 products