Steel Plugs | McMaster-Carr

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2,136 Products

Fluid Handling

Pipe Plugs

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

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

Hose Fittings

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

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Tube and Tube Fittings

Tube and Tube Fittings

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

Sights

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

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Building and Machinery Hardware

Protective Plugs

Protective Plugs

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

Protective Caps

Protective Caps

Cover holes at the end of pipe, conduit, and fittings to keep out debris

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Electrical

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Cover unused holes in enclosures to keep out dust, dirt, and moisture

Outlet Boxes

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

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Cable Entry Panels

Cable Entry Panels

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

Wire and Cable Crimpers

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

Wire Stripper Crimpers

Wire Stripper Crimpers

Strip wire and crimp connectors with one tool

Wire and Cable Crimper Dies

Wire and Cable Crimper Dies

Attach to cordless crimpers to secure connectors onto cable

Outlet Strips

Plug in multiple devices to power them from a single outlet

Battery Chargers

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

Lubricating

Grease Fittings

Grease Fittings

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

Grease Fitting Adapters

Grease Fitting Adapters

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

Grease Fitting Repair Tools

Grease Fitting Repair Tools

Remove and repair broken or clogged grease fittings and re-tap threaded holes

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Grease Fitting Cleaning Tools

Grease Fitting Cleaning Tools

Flush out old grease, dirt, and debris from clogged fittings

Grease Fitting Installation Tools

Grease Fitting Installation Tools

Tap to insert grease fittings in unthreaded holes

Oil Fittings

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

Fabricating and Machining

Fixture Plate Plugs

Fixture Plate Plugs

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

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

Threaded Hole Location Gauges

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

Containers, Storage, and Furniture

Drum Plugs

Seal drum lid openings

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

Fastening and Joining

Standoff Caps

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

Press-Fit Nuts

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

Retaining Rings

Retaining Rings

Hold components on a shaft

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

Fabric Snaps

Join soft, heavy fabrics such as leather and canvas

Rivets

Join materials together permanently, especially when too thin or fragile to fasten with screws

Facility and Grounds Maintenance

Faucet Hole Covers

Faucet Hole Covers

Close off unused faucet holes intended for soap dispensers and side sprayers

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)