18 mm Drive Sockets | McMaster-Carr

Filter by

Bolt Clearance Type

Standard

Deep

Bolt-Through

System of Measurement

Square Drive Size

Drive Size

Socket Shape

Sold As

Drive Style

Socket Style

Number of Pieces

Drive Type

Socket Type

Finish

Container Type

Set Type

Sockets with Drive Tools

Overall Length

Tip Style

Wrench Opening Shape

Thread Size

Material

Head Style

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Wrench Style

91 Products

Sockets

6-Point Sockets

The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points.

6-Point Flex Sockets

Pivot the head to access fasteners from an angle.

Fastener-Holding 6-Point Sockets

Hold fasteners securely in place as you drive them.

Open-End 6-Point Sockets

Slide the open side of these sockets over a tube or hose to adjust a nut that’s already installed.

Bolt-Through 6-Point Sockets

Pair these sockets with a bolt-through ratchet wrench to reach nuts at the bottom of a long threaded rod or bolt which can pass through the socket and the head of the wrench.

Nonmarring 6-Point Sockets

With a plastic insert, these sockets firmly grip hex nuts and bolts without rounding them or scratching highly polished finishes.

12-Point Sockets

12-Point Flex Sockets

Pivot the head to access fasteners from an angle.

Spanner Sockets

For easy tightening and loosening, these sockets have pins that grip the slotted sides on bearing nuts.

Universal-Fit Sockets

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

Hex Bit Sockets

Wrench Heads

Reach nuts obstructed by a fluid line or other barrier with these wrench heads.

Spark Plug Sockets

A rubber insert grips the plug to prevent damage.

Impact Sockets

6-Point Impact Sockets

Achieve the best possible grip on hex fasteners and prevent rounding.

Fastener-Holding 6-Point Impact Sockets

A magnet holds the fastener securely enough to drive self-tapping screws.

6-Point Flex Impact Sockets

Pivot the head to access fasteners from an angle.

12-Point Impact Sockets

The 12-point shape quickly positions on hex fasteners.

Impact Hex Bit Sockets

These sockets are made to withstand the high torque and force of impact tools.

Replacement Bits for Hex Bit Sockets

Switch out worn or damaged bits instead of replacing your entire bit socket.

Socket Sets

6-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish.

Economy 6-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported.

Bolt-Through 6-Point Socket Sets

Pair the sockets in these sets with the bolt-through ratchet wrench to reach nuts at the bottom of a long threaded rod or bolt.

Fastener-Holding 6-Point Socket Sets

Two spring-loaded balls inside these sockets firmly hold nuts and bolts in place as you turn them, including nonmagnetic fasteners like stainless steel screws.

Open-End 6-Point Socket Sets

The sockets in these sets have a cutout and extra length so you can reach and twist nuts without having to disconnect your line.

12-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish.

Economy 12-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported.

Hex Bit Socket Sets

Box-End Wrench Head Sets

Attach one of the heads in these sets to a torque wrench for more leverage to loosen a stubborn fastener.

Wrench Head Sets

Reach nuts obstructed by a fluid line or other barrier with the wrench heads in these sets.

Secure-Grip Wrench Head Sets

Grip more of your fastener head with these wrench heads.

Ratcheting Wrench Head Sets

Connect one of the heads in these sets to a socket extension to reach an obstructed fastener, then turn the fastener without removing and repositioning the wrench head.

6-Point Impact Socket Sets

The hex shape grips hex fasteners and prevents rounding. These sockets are made to withstand the high torque and force of impact tools.

6-Point Flex Impact Socket Sets

Pivot the head to access fasteners from an angle.

Impact Hex Bit Socket Sets

Use these sockets as an alternative to a screwdriver or L-key. They are made to withstand the high torque and force of impact tools.

Extended-Reach Impact Hex Bit Socket Sets

Extra-long bits help you access hard-to-reach fasteners.

Flex-Head Socket Wrenches

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

Changeable-Head Torque Wrenches

Change heads to use these tools as an open-end, box, square drive, or hex-key wrench.