3/4 Plugs | McMaster-Carr

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System of Measurement

Material

Fitting Type

Thread Type

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Pipe Material

For Use With

Alcohol-Based Solvents

Acetic Acid (White Vinegar)

Acetic Acid (White Vinegar) (5% Concentration)

Acetic Acid (White Vinegar) (10% Concentration)

Air

Alcohol

Ammonia

Ammonium Hydroxide (0-3% Concentration)

Ammonium Hydroxide (3-6% Concentration)

Shape

Pressure Class

Gender

Maximum Pressure @ Temperature

Body Shape

Length

Pipe Schedule

Plug Construction

Flange Material

Drive Size

Fitting Connection

Push-to-Connect Grip Ring

Finish

Zinc Phosphate Coated

Thread Size

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

649 Products

Fluid Handling

Pipe Plugs

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

129 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

60 products

Pipe Flanges

Bolt together with a gasket to create an access point within a line

14 products

Tube End Cap and Plug Kits

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

1 product

Tube End Plugs

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

1 product

Tube End Caps

Cover the ends of tube to keep out dirt and debris

1 product

Tube Fittings

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

2 products

Hose and Hose Fittings

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

91 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

17 products

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

6 products

Breather Vents

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

9 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

4 products

Sights

Observe and monitor the contents of pipes, tanks, and other containers

25 products

Liquid-Level Gauges

Monitor fluid levels in containers

5 products

Corrosion-Inhibiting Rods and Pads

Protect tanks, water heaters, and heat exchangers from rust; also known as sacrificial anodes

10 products

Heating Elements

Turn electrical current into heat

13 products

Building and Machinery Hardware

Protective Plugs

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

12 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

11 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

4 products

Slip-On Framing and Fittings

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

4 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Plugs

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

2 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

164 products

Metric Circular Receptacles

Install in walls and panels and pair with plugs to make metric connections

1 product

Containers, Storage, and Furniture

Drum Plugs

Seal drum lid openings

13 products

Drum Locks

Secure drum lids and openings to prevent tampering

2 products

Measuring and Inspecting

Humidity-Indicating Plugs

Monitor humidity in sealed containers without opening them, protecting the inside from contamination

5 products

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

7 products

Lubricating

Grease Fittings

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

1 product

Sealing

Drum Plug Gaskets

Form a tighter seal in drum openings than with a drum plug alone

3 products