Square Drive Wrenches | McMaster-Carr


Socket	Square Drive Size Adapter

Extension	Flex Adapter

Hex Shank to Square Drive Adapter	Spinner

Secure-Hold Socket Adapter	Retaining Ring

Secure-Hold Extension	Hex Head Adapter

Quick-Change Adapter	Torque-and- Angle Measuring Adapter

Insert	Ratchet Adapter

Torque- Limiting Adapter

	Individual/Set Individual/Set

Individual

Set

	Drive Type Drive Type

Manual

Impact

Nonimpact Power

	Finish Finish

Magnesium Phosphate
Coated

Zinc-Phosphate Coated

	Material Material

	OD OD

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Tip Style Tip Style


Standard	Ball

	Wrench Style Wrench Style


Square Drive	Chain

Open End	Strap

Spanner

	Head Style Head Style


Standard	Flex

	Number of Pieces Number of Pieces

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
32
34
40
75

	Nut Clearance Depth Nut Clearance Depth

	Bolt Clearance Depth Bolt Clearance Depth

3,040 Products

Ratchet Wrenches and Handles

Flex-Head Wrench Handles

Pivot the head for access to fasteners in tight spots.

Cushion-Grip Flex-Head Wrench Handles

A rubber coating provides a comfortable grip.

Adjustable-Length Flex-Head Wrench Handles

Extend the shaft for additional length.

Sliding T-Style Wrench Handles

Position the head anywhere along the handle.

L-Style Wrench Handles

The L shape provides clearance when reaching over obstructions.

Screwdriver-Style Socket Handles

Turn sockets from above when there's not room to swing a standard wrench handle.

Flexible Screwdriver-Style Socket Handles

Bend around obstructions to turn hard-to-reach fasteners.

Ratcheting Screwdriver-Style Socket Handles

The ratcheting mechanism turns sockets quickly.

Speeder Handles

Fasten quickly with these crank-style handles.

Torque Multipliers

Apply more torque than your wrench can deliver on its own. Use a multiplier with a torque wrench to ensure you do not exceed the maximum input torque.

Mountable Torque Multipliers

Anchor these multipliers for added stability.

Tight-Clearance Offset Sockets

Box-End Tight-Clearance Offset Sockets

Make maximum contact with all sides of a fastener to reduce slipping. These sockets are also known as torque adapters.

Ratcheting Box-End Tight-Clearance Offset Sockets

A ratchet mechanism allows you to turn fasteners without removing and repositioning the 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.

Secure-Grip Tight-Clearance Offset Sockets

The opening shape makes more contact with fasteners for a better grip than standard open-end sockets. Also known as flare-nut or line wrench sockets, they're often used with flared tube fittings and fuel and hydraulic lines.

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.

6-Point Sockets

Nonsparking 6-Point Sockets

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

Stubby 6-Point Sockets

These short sockets fit spaces where height clearance is limited.

Extra-Deep 6-Point Sockets

Extra length allows access to fasteners on long bolts.

Nonmarring 6-Point Sockets

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

6-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.

8-Point Sockets

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

12-Point Flex Sockets

Pivot the head to access fasteners from an angle.

12-Point Sockets

Electrical-Insulating 12-Point Sockets

Insulated to protect against accidental contact with live electrical circuits, these sockets are tested to 1,000 volts to meet IEC 60900.

Tri-Groove Sockets

Grip the indentations around the outside of tri-groove fasteners.

External Torx-Plus Sockets

Designed to fit on external Torx-Plus fasteners, often found on pickup trucks, these sockets have squared lobes that resist slipping at high torque.

Universal-Fit Sockets

Turn many sizes of square, hex, and 8-point fasteners with one socket. Place over the fastener and 54 pins move to grip it securely.

5-Point Sockets

These sockets fit the nuts found on water and gas valves.

Bit Sockets

Hex Bit Sockets

Electrical-Insulating Hex Bit Sockets

Insulated to protect against accidental contact with live electrical circuits, these sockets are tested to 1,000 volts to meet ASTM F1505 and IEC 60900.

Extended-Reach Hex Bit Sockets

Extra-long bits allow access to hard-to-reach fasteners.

Stubby Hex Bit Sockets

The short bit on these sockets fits in spaces where height clearance is limited.

Extended-Reach Ball-End Hex Bit Sockets

Extra-long bits allow access to hard-to-reach fasteners.

Ball-End Hex Bit Sockets

The ball end allows angled entry when you don't have exact alignment between the socket bit and fastener.

Square Bit Sockets

These sockets are also known as Robertson bits.

Extended-Reach Torx Bit Sockets

Extra-long bits allow access to hard-to-reach fasteners.

Tamper-Resistant Torx Bit Sockets

These sockets are also known as pin-in-Torx bits.

Tamper-Resistant Hex Bit Sockets

These sockets are also known as pin-in-hex or pin-in-socket bits.

Phillips Bit Sockets

Slotted Bit Sockets

Torx Bit Sockets

Torx-Plus Bit Sockets

Pozidriv® Bit Sockets

Spark Plug Sockets

A rubber insert grips the plug to prevent damage.

Flex Spark Plug Sockets

Pivot the head to access fasteners from an angle.

Strut Channel Sockets

Designed to fit inside strut channel, these sockets make it easier to mount the channel than using an extension or additional tools.

Threaded Rod Sockets

The opening is designed to grip threaded rod for quick installation and removal without damaging the threads.

Bolt-Through Sockets

Turn nuts on bolts and threaded rod, which pass through these sockets.

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.

Nonmarring 6-Point Impact Sockets

Tighten or loosen nuts and bolts without damaging the finish.

Extra-Deep 6-Point Impact Sockets

Extra length allows access to fasteners on long bolts.

Thin-Wall 6-Point Impact Sockets

With a smaller OD than standard sockets, these fit between tightly spaced fasteners.

6-Point Flex Impact Sockets

Pivot the head to access fasteners from an angle.

4-Point Impact Sockets

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

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.

12-Point Flex Impact Sockets

Pivot the head to access fasteners from an angle.

External Torx Impact Sockets

Nonsparking 12-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.

12-Point Impact Sockets

The 12-point shape quickly positions on hex fasteners.

Impact Hex Bit Sockets

Impact Torx Bit Sockets

Budd Wheel Impact Sockets

Designed to remove and install dual wheels on trucks and trailers, these sockets have a hex recess for accessing lug nuts and a square recess to turn the threaded shafts found on inner wheels.

Power Sockets

Fastener-Holding Power Sockets

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

Power Sockets

The hex shape grips hex fasteners and prevents rounding.

Power Hex Bit Sockets

Use bit sockets as an alternative to a screwdriver or L-key.

Socket Adapters and Extensions

Square Drive Size Adapters

Convert from one square drive size to another.

Convertible Square Drive Size Adapters

Push the square drive through the adapter to change size.

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.

Angled Hex Shank to Square Drive Adapters

The angled shape lets you use your bit driver like a wrench.

Hex Shank to Square Drive Adapters

Turn sockets with a bit screwdriver.

Socket Extensions

Extend your socket's reach.

Nonsparking Socket Extensions

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

Electrical-Insulating Socket Extensions

Insulated to protect against accidental contact with live electrical circuits, these extensions are tested to 1,000 volts to meet IEC 60900.

Secure-Hold Socket Extensions

Lock your socket into the extension to prevent accidental disengagement.

Wobble Socket Extensions

The square drive has a rounded shape that allows the extension to pivot inside the socket opening and turn it from an angle.

Flexible Socket Extensions

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

Flex Socket Adapters

Pivot the head to access fasteners from an angle.

Fingertip Socket Spinners

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

Secure-Hold Socket Adapters

Lock the adapter on your tool and the socket to the adapter to prevent accidental disengagement.

Torque-and-Angle Measuring Socket Adapters

A digital display shows how torque measurements change as you turn the wrench. Set the desired torque and angle—lights and an audible alarm indicate when target has been reached or exceeded.

Adjustable Torque-Limiting Socket Adapters

Set a desired torque within the range.

Hex Head Socket Adapter Sets

Attach one of these adapters to a socket to turn it with an open-end or box wrench.

Factory-Set Torque-Limiting Socket Adapters

Adapters are set to a specific torque and cannot be adjusted.

Ratcheting Socket Adapters

Change a standard wrench handle into a ratcheting wrench.

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 Flex Socket Adapters

Pivot the head to access fasteners from an angle.

Impact Socket Extensions

Attach to your socket for a longer reach.

Impact Quick-Change Socket Adapters

Pull the collar to quickly attach and remove sockets.

Secure-Hold Impact Socket Extensions

Lock your socket into the extension to prevent accidental disengagement.

Impact Torque-Limiting Socket Adapters

Prevent overtightening that can damage fasteners. These adapters spring back slightly when the set torque is reached.

Power Socket Adapters and Extensions

Flexible Power Socket Extensions

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

Hex Shank to Power Socket Square
Drive and Impact Square Drive Adapters

Use sockets with tools that accept hex shanks, such as impact drivers and power drills.

Socket Sets

External Torx Socket Sets

Premium 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.

Value 6-Point Socket Sets

For high quality at a lower price, choose these U.S.A.-made sets.

Nonsparking 6-Point Socket Sets

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

Value 12-Point Socket Sets

For high quality at a lower price, choose these U.S.A.-made sets.

Premium 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.

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.

Economy 12-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported.

12-Point Flex Socket Sets

Pivot the head to access fasteners from an angle.

External Torx-Plus Socket Sets

With squared lobes that won’t slip at high torque, all of the sockets in these sets are designed to fit on external Torx-Plus fasteners, often found on pickup trucks.

Tri-Groove Socket Sets

Grip the indentations around the outside of tri-groove fasteners.

8-Point Socket Sets

Quickly position these sockets on square fasteners.

Tight-Clearance Offset Socket Sets

Box-End Tight-Clearance Offset Socket Sets

Make maximum contact on all sides of a fastener to reduce slipping. These sockets are also known as torque adapters.

Ratcheting Box-End Tight-Clearance Offset Socket Sets

A ratchet mechanism allows you to turn fasteners without removing and repositioning the socket.

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.

Secure-Grip Tight-Clearance Offset Socket Sets

Bit Socket Sets

Hex Bit Socket Sets

Stubby Hex Bit Socket Sets

The short bit on these sockets fits in spaces where height clearance is limited.

Extended-Reach Hex Bit Socket Sets

Extra-long bits allow access to hard-to-reach fasteners.

Ball-End Hex Bit Socket Sets

The ball end allows angled entry when you don't have exact alignment between the socket bit and fastener.

Extended-Reach Ball-End Hex Bit Socket Sets

Extra-long bits allow access to hard-to-reach fasteners.

Torx-Plus Bit Socket Sets

Hex, Torx, Phillips, and Slotted Bit Socket Assortments

Keep a convenient mix of hex, Torx, Phillips, and slotted bit sockets on hand.

Extended-Reach Torx Bit Socket Sets

Extra-long bits allow access to hard-to-reach fasteners.

Tamper-Resistant Hex Bit Socket Sets

These sockets are also known as pin-in-hex or pin-in-socket bits.

Torx Bit Socket Sets

Tamper-Resistant Torx Bit Socket Sets

These sockets are also known as pin-in-Torx bits.

Square Drive Size Adapter Sets

Convert from one square drive size to another.

Socket Extension Sets

Secure-Hold Socket Extension Sets

Lock your socket into the extension to prevent accidental disengagement..

Socket Extension Sets

Attach to your socket for a longer reach.

Bolt-Through Socket Sets

Turn nuts on bolts and threaded rod, which pass through these sockets.

Impact Socket Sets

Impact Square Drive Size Adapter Sets

Convert from one square drive size to another.

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.

External Torx Impact Socket Sets

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

Impact Socket Extension Sets

Attach to your socket for a longer reach.

Budd Wheel Impact Socket Sets

Remove and install dual wheels on trucks and trailers with the sockets in these sets.

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.

Secure-Hold Impact Socket Extension Sets

Lock your socket into the extension to prevent accidental disengagement.

Impact Torque-Limiting Socket Adapter Sets

Prevent overtightening that can damage fasteners. These adapters spring back slightly when the set torque is reached.

Socket Retaining Rings

One-Piece Socket Retaining Rings

Two-Piece Socket Retaining Rings

Fastener-Holding Inserts for Sockets

Slip these magnetic inserts into your sockets to keep fasteners from falling out.

Socket Organizers

Easy-ID Socket Organizers

Store sockets on posts marked with the size.

Clip-Rail Socket Organizing Trays

Hold different square drive sizes on the four clip rails stored in these trays.

Clip-Rail Socket Organizers

Move the sliding clips to any position along the rail to hold a variety of sockets.

Foam Socket Organizers

The slots in these low-profile organizers are a different color than the base so it's clear when tools are missing from your bench top or drawer.

Magnetic Socket Organizers

Magnets hold sockets securely in place.

Easy-Slide Clip-Rail Socket Organizers

The rail is smooth plastic so the clips move more easily than on steel-rail organizers.

Strap and Chain Wrenches

Square Drive Chain Wrenches

Using your ratchet wrench as a handle, access hard-to-reach caps and plugs or grip objects of almost any shape.

Square Drive Round-Grip Wrenches

Use your ratchet wrench as a handle to reach filters and other round objects in tight spots.

Square Drive Strap Wrenches

Pair these tools with your ratchet wrench to get more leverage.

Square Drive Dual-Size Adjustable Pin Spanner Wrenches for Holes on the Face

Square Drive Dual-Size Adjustable Pin
Spanner Wrenches for Holes on the Face

Use your ratchet wrench as a handle.

Drivers, Keys, and Bits

Square Drive Torque-Measuring Screwdrivers

Attach a socket to the 1/4" square drive tip. These tools have a dial that shows how torque measurements change as you turn the driver. Use to fasten to a specific torque, determine fastener torque specifications, and identify the torque required to loosen tightened fasteners.

Square-Drive Torque Screwdrivers

Attach a socket to the 1/4" square drive tip to turn hex nuts and hex head screws. When set torque is reached, these drivers signal with an audible click.

Changeable-Shaft Factory-Set Torque Screwdrivers

Choose a handle based on torque and change shafts to use a different size or drive style. Factory-set screwdrivers ensure you reach the same torque every time.

Bit Adapters for Impact Wrenches

Designed to withstand high torque and force, these adapters fit the square drive on impact wrenches. Use with hex-shank bits (also known as insert bits).

Secure-Hold Bit Adapters for Ratchet Wrenches

Lock your bit into the adapter to prevent accidental disengagement. These adapters attach to square-drive tools.

Bit Adapters for Ratchet Wrenches

Attach these adapters to square-drive tools.

Impact Screwdrivers

Break stuck screws free using screwdriver bits. Strike the end of the handle with a hammer to turn the bit and tighten or loosen fasteners.