Metric Pipe Fittings | McMaster-Carr

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UN/UNF (SAE Straight)

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Acetic Acid (White Vinegar)

Acetic Acid (White Vinegar) (10% Concentration)

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2B999

EAR99

DFARS Specialty Metals

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Nozzle Connection Thread Type

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9,876 Products

Fluid Handling

Pipe and Pipe Fittings

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

3,545 products

Tube Fittings

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

3,680 products

Tube Fitting Rings

Prevent leaks at tubing connection points

6 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

28 products

Tube Fitting Sleeves

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

23 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

25 products

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

31 products

Tube Fitting Clamps

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

14 products

Tube End Plugs

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

7 products

Tube Fitting Sleeve and Nut Kits

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

6 products

Hose Fittings

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

1,283 products

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

2 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

5 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

Junction Blocks

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

7 products

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

29 products

Pressure Test Plugs

Tighten onto equipment to check pressure without permanently installing a gauge

3 products

Pressure-Relief Valves

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

3 products

On-Off Valves

Start and stop flow through a line

149 products

Valve Union Fittings

Mating parts join valves to a line for quick connection and removal

4 products

Air Valves

Fill tanks, tires, and other pressurized equipment

2 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

4 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

6 products

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

7 products

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

10 products

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

5 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

193 products

Grease Gun Tips

Attach to grease gun nozzles and direct a stream of lubricant into grease fittings on machinery

5 products

Grease Gun Nozzles

Replace nozzles on grease guns

2 products

Electrical

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

9 products

Conduit and Conduit Fittings

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

42 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

1 product

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

25 products

Material Handling

Vacuum Fittings

Connect to vacuum cups and compressed air to create suction; also known as venturi devices

14 products

Measuring and Inspecting

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

2 products

Communication

Tube Fitting Markers

Snap onto push-to-connect fittings to identify different tubing lines

3 products

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

64 products