Brass Hole Plugs | McMaster-Carr

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1,076 Products

Fluid Handling

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

377 products

Tube Fittings

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

84 products

Hose

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

1 product

Hose End Caps

Cover the ends of hose to keep out dirt and debris

38 products

Hose Fittings

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

9 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

74 products

Drain Valves

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

64 products

Breather Vents

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

28 products

Pressure Test Plugs

Tighten onto equipment to check pressure without permanently installing a gauge

4 products

Heat Exchanger Plugs

Plug leaky internal tubes in heat exchangers

17 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

10 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

80 products

Cable Entry Panels

Pass multiple cords into an enclosure while sealing out moisture, dust, and other contaminants

5 products

Coaxial Connector Caps

Terminate the end of an unused coaxial cable

1 product

Fabricating and Machining

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

1 product

Building and Machinery Hardware

Grommets

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

120 products

Safety Equipment

Fire Hydrant Plugs

Pair with a hook-style spanner wrench to quickly seal fire hydrants and washdown equipment

3 products

Fire Hydrant Caps

Pair with a hook-style spanner wrench to quickly cover and uncover fire hydrants

5 products

Lubricating

Oil Fittings

Install in engine blocks and other machinery to pour in oil while keeping dust out

1 product

Fastening and Joining

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

1 product

Containers, Storage, and Furniture

Drum Locks

Secure drum lids and openings to prevent tampering

2 products

Facility and Grounds Maintenance

Sink Drains

Empty liquids from sinks into sewer lines

5 products