Pipe Plug Sockets | McMaster-Carr

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1,063 Products

Sockets

4-Point Sockets

Also known as pipe plug sockets, these sockets have a square shape that provides the best possible grip on square fasteners and prevents rounding.

8-Point Sockets

Quickly position these sockets on square and external 8-point fasteners.

Universal-Fit Sockets

Turn multiple shapes and sizes of fasteners with a single socket.

Tight-Clearance Offset Sockets

Often used with an extension, these sockets turn fasteners and fittings in obstructed areas that a regular socket can't reach. They are also known as crowfoot wrenches.

8-Point Impact Sockets

Quickly position these sockets on square fasteners.

Extra-Deep 8-Point Impact Sockets

Extra length allows access to fasteners on long bolts.

Nonsparking 8-Point Impact Sockets

Made of aluminum-bronze, these sockets satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

4-Point Impact Sockets

The square shape provides the best possible grip on square fasteners and prevents rounding.

Socket Sets

8-Point Socket Sets

With twice as many corners, 8-point sockets grab onto square-drive screws and nuts more quickly than 4-point sockets.

Wheel Bearing Locknut Socket Sets

Shaped and sized for compatibility with wheel bearing locknuts on trucks and trailers, the sockets in these sets make it easy to install and remove locknuts.

90° Elbow Fitting Socket Sets

Turn 90° elbow fittings that are in tight spots with the sockets in these sets.

Tight-Clearance Offset Socket Sets

Often used with an extension, these sockets turn fasteners and fittings in obstructed areas that a regular socket can't reach. They are also known as crowfoot wrenches.

Square Drive Size Adapter Sets

Convert from one square drive size to another.

Impact Square Drive Size Adapter Sets

Convert from one square drive size to another.

4-Point Impact Socket Sets

Turn square-drive fasteners in several sizes with these socket sets.

Socket Adapters and Extensions

Convertible Square Drive Size Adapters

Push the square drive through the adapter to change size.

Square Drive Size Adapters

Convert from one square drive size to another.

Electrical-Insulating Square Drive Size Adapters

These adapters are insulated to protect against accidental contact with live electrical circuits. They are tested to 1,000 volts to meet IEC 60900.

Wobble Socket Extensions

The male ends of these extensions are rounded, so they can pivot to use your tool at an angle.

Secure-Hold Socket Extensions

Lock your socket into these extensions to prevent accidental disengagement.

Socket Extensions

Extend your socket's reach.

Electrical-Insulating Socket Extensions

Safely extend your reach in areas where you could accidentally come into contact with live circuits.

Nonsparking Socket Extensions

Safely lengthen the reach of your socket while working near flammable vapors and combustible residue.

Flexible Socket Extensions

Bend these socket extensions around obstructions to turn hard-to-reach fasteners.

Flexible Socket Extension Sets

Bend these extensions to reach inconveniently located fasteners. These sets include multiple extension lengths, so you can find the right length to reach around obstructions.

Secure-Hold Socket Extension Sets

Reach a variety of spots with the confidence that your extension won’t disengage.

Socket Extension Sets

Keep common extension lengths on hand to reach a variety of spots—just attach them to your socket.

Wobble Socket Extension Sets

Tighten and loosen fasteners in hard-to-reach spots with a variety of extensions that lengthen the reach of your socket.

Finger-Tightening Socket Adapters

Fit these adapters between a wrench and socket to enable finger tightening.

Impact Socket Adapters and Extensions

Impact Square Drive Size Adapters

Convert from one square drive size to another.

Impact Magnetic Square Drive Size Adapters

A magnet holds the socket, making changes quicker.

Impact Socket Extensions

Attach to your socket for a longer reach.

Secure-Hold Impact Socket Extensions

Lock your socket into the extension to prevent accidental disengagement.

Impact Socket Extension Sets

Reach a variety of spots by keeping common extension lengths on hand.

Secure-Hold Impact Socket Extension Sets

Also known as positive-locking extensions, these extensions hold sockets place with a ball that only retracts when you pull the collar down. Designed to prevent accidental detachment, they lock to your socket more securely than other extensions.

Continuous-Duty Socket Adapters and Extensions

Flexible Power Socket Extensions

Bend these extensions around obstructions to access hard-to-reach fasteners.

Continuous-Duty Socket Extensions

First developed for aerospace and automotive assembly processes, these extensions will stand up to your high-volume production and assembly lines.

Socket Retaining Rings

One-Piece Socket Retaining Rings

Two-Piece Socket Retaining Rings

Stretch-Fit One-Piece Socket Retaining Rings

Stock fewer sizes of retaining rings—these stretch to fit a range of socket diameters.

Ratcheting Box Wrenches

A ratchet mechanism allows you to turn fasteners in tight spaces without removing and repositioning the wrench.

Two-Head Ratcheting Box Wrenches

Ratchet mechanisms allow you to turn fasteners in tight spaces without removing and repositioning the tool.

Two-Head Deep-Offset Ratcheting Box Wrenches

The 25° offset heads give you additional clearance to turn hard-to-reach fasteners.

Socket Wrenches

Lug Wrenches

Turn lug bolts on car and truck wheels. These wrenches have a different socket size at each end.

Socket Wrenches

T-Handle Socket Wrenches

Flex-Head Socket Wrenches

Pivot the socket end to access hard-to-reach fasteners.

Socket Wrench Sets

These wrenches have one pivoting socket end and one open end.

Open-End Wrenches

Striking Open-End Wrenches

Strike the handle with a hammer to break stuck fasteners free. These are also known as slugging wrenches.

Stubby Open-End Wrenches

When turning fasteners in small spaces, these short wrenches fit where others can't.

Miniature Open-End Wrenches

Sized for working on small equipment, these wrenches are 4 1/8" long with a slim head and handle.

Tapered-Handle Open-End Wrenches

Also known as spud, structural, and construction wrenches, use the pointed end of the handle to align bolt holes during assembly.

Deep-Offset Tapered-Handle Open-End Wrenches

The head is offset 45° to provide additional clearance when reaching over obstructions.

Secure-Grip Open-End Wrenches

The opening shape makes more contact with fasteners for a better grip than standard open-end wrenches. These tools are also known as flare-nut or line wrenches.

75° Angle Tight-Clearance Open-End Wrenches

One head is angled for access to hard-to-reach fasteners. These are also known as ignition wrenches.

Nonsparking Open-End Wrenches

Made of aluminum-bronze that is Factory Mutual approved, these wrenches inhibit sparking and are nonmagnetic and corrosion resistant. They satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Corrosion-Resistant Open-End Wrenches

These wrenches are made of stainless steel for excellent corrosion resistance.

Aluminum Open-End Wrenches

These lightweight tools are also known as AN (Army-Navy) wrenches.

Two-Head Tight-Clearance Open-End Wrenches

These are also known as tappet wrenches.

60° Angle Open-End Wrenches

One head is angled 60° for access to hard-to-reach fasteners. These are also known as ignition wrenches.

Tight-Clearance Open-End Wrenches

The slim head fits into tight spaces and around thin fasteners.

Two-Head Open-End Wrenches

Open-End Wrenches

Open-End Wrench Sets

Miniature Open-End Wrench Sets

Sized for working on small equipment, these wrenches are 4 1/8" long with a slim head and handle.

Stubby Open-End Wrench Sets

When turning fasteners in small spaces, these short wrenches fit where others can't.

Secure-Grip Open-End Wrench Sets

The opening shape makes more contact with fasteners for a better grip than standard open-end wrenches. These tools are also known as flare-nut or line wrenches.