Aluminum Plugs | McMaster-Carr

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Chromate Conversion Coated

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2B999

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DFARS Specialty Metals

Fitting Material

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1,986 Products

Fluid Handling

Pipe and Fittings

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

147 products

Hose Fittings

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

258 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

58 products

Hose End Plugs

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

3 products

Hose

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

98 products

Tube Fittings

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

10 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

43 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

4 products

Drain Valves

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

13 products

Sights

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

20 products

Liquid-Level Gauges

Monitor fluid levels in containers

14 products

Breather Vents

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

4 products

Corrosion-Inhibiting Rods and Pads

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

4 products

Electrical Power, Networking, and Controlling

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

40 products

Mil. Spec. Connectors

Meet strict military standards or are compatible with Mil. Spec. connectors

111 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

36 products

Mil. Spec. Connector Caps

Protect Mil. Spec. connectors when they're not in use

12 products

Metric Circular Receptacles

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

64 products

Metric Circular Connector Caps

Keep metric circular connectors safe when they're not in use

4 products

Audio Plugs

Pair with sockets or receptacles to make audio connections

2 products

Mini Connector Caps

Shield mini connectors when they're not in use

5 products

RJ45 Connectors

Plugs, sockets, and receptacles to make Ethernet connections

2 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

59 products

Electrical Contact Installation Tools

Add pin-and-sleeve contacts to connectors

4 products

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

6 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

9 products

Wall Plates

Cover switches and outlets for a finished look or to close them off when not in use

12 products

Electrical Enclosure Plugs

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

6 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

5 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

455 products

Electrical Enclosure Vents

Attach to sealed enclosures so air can flow to equalize temperature and pressure

5 products

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

77 products

Wire and Cable Crimper Dies

Attach to cordless crimpers to secure connectors onto cable

30 products

Building and Machinery Hardware

Protective Plugs

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

25 products

Protective Caps

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

32 products

Grommets

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

64 products

Slip-On Framing End Caps

Cover the rough ends of slip-on framing rails for a finished look

9 products

Fastening and Joining

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

2 products

Threaded Inserts

Create new threads or repair stripped threads

158 products

Standoff Caps

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

1 product

Drum Plug Wrenches

Install and remove screw-in drum plugs; also known as bung wrenches

2 products

Safety Equipment

Fire Hydrant Caps

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

1 product

Measuring and Inspecting

Humidity-Indicating Plugs

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

6 products

Fabricating and Machining

Fixture Plate Plugs

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

2 products

Lubricating

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

3 products