Metric Tube Fittings | McMaster-Carr

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System of Measurement

Thread Type

UN/UNF (SAE Straight)

Tube OD

Shape

Pipe Size

Gender

Fitting Connection

Material

Lithium/Calcium Blend

For Use With

Acetic Acid (White Vinegar)

Connects To

Fitting Type

Thread Size

Tube Material

Tube Stem OD

Release Ring Material

Tube Hardness Rating

Maximum Pressure @ Temperature

Tube ID

Release Type

Color

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

7,518 Products

Fluid Handling

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

5,186 products

Hose Fittings

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

1,394 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

1 product

Manifolds

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

114 products

Pipe and Pipe Fittings

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

289 products

Junction Blocks

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

7 products

On-Off Valves

Start and stop flow through a line

44 products

Check Valves

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

5 products

Flow-Adjustment Valves

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

2 products

Mufflers

Reduce noise and filter exhaust fumes

19 products

Filter Housings

Use with filter cartridges to remove particles from liquid

4 products

Pressure-Relief Valves

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

3 products

Lubricating

Grease Fitting Adapters

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

19 products

Grease Fittings

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

6 products

Power Transmission

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

5 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

9 products

Flush-Fit Framing Rails

Join flush-fit framing rails to build smooth stair and platform railings

1 product

Leveling Mount Inserts

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

15 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

39 products

Electrical Power, Networking, and Controlling

Conduit and Fittings

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

27 products