1/4" Square Drive Wrenches | McMaster-Carr

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System of Measurement

Square Drive Size

Drive Size

Drive Style

External 12-Point

External Square

External Torx Plus

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Overall Length

31/32" to 3 1/16"

Socket Shape

Bolt Clearance Type

Socket Style

Sold As

Socket Type

Finger-Tightening Adapter

Hex Head Adapter

Hex Shank-to-Square Drive Adapter

Quick-Change Adapter

Secure-Hold Extension

Secure-Hold Socket Adapter

Square Drive Size Adapter

OD

Tip Style

Finish

Magnesium Phosphate Coated

Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Drive Type

Material

Length

31/32" to 3 1/16"

RoHS

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Number of Pieces

Unit of Measure

Torque

0 in·lbf to 1.5 in·lbf

0 in·ozf to 32 in·ozf

0 in·lbf to 3 in·lbf

0 in·ozf to 80 in·ozf

0 in·lbf to 10 in·lbf

0 in·lbf to 12 in·lbf

0 in·lbf to 24 in·lbf

0 in·lbf to 30 in·lbf

0 in·lbf to 8 in·ozf

0 in·lbf to 15 in·lbf

0 in·lbf to 50 in·lbf

0 in·lbf to 75 in·lbf

0 in·lbf to 80 in·lbf

0 ft·lbf to 40 ft·lbf

0 ft·lbf to 100 ft·lbf

0.2 ft·lbf to 4.4 ft·lbf

2.6 in·lbf to 53.1 in·lbf

Wrench Style

Shank Type

Quick-Change Hex

Head Style

How can we improve?

833 Products

Fastening and Joining

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

Wrench Handles

Generate extra torque to loosen stubborn fasteners; also known as breaker bars

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Socket Drivers

Tighten and loosen sockets from above when there isn't room to swing a standard wrench

Impact Wrenches

Impact Wrenches

Maximize torque to break frozen bolts free and drive fasteners more quickly than other wrenches

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Torque Screwdrivers

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

Speeder Handles

Speeder Handles

Crank the handle to fasten nuts and bolts quickly

Screw, Pipe, and Stud Extractors

Screw, Pipe, and Stud Extractors

Remove broken screws, pipes, and studs without damaging the threads around them

Containers, Storage, and Furniture

Socket Organizers

Socket Organizers

Arrange sockets at your workstation or carry them neatly around your facility

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