1/2" Square Drive Ratchets | McMaster-Carr

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System of Measurement

Square Drive Size

Head Style

Overall Length

15/16" to 1 1/8"

31/32" to 3 1/16"

1 1/2" to 2 1/4"

1 9/16" to 2 1/2"

Head Shape

Finish

Magnesium Phosphate Coated

Phosphate Coated

Wrench Style

Drive Size

Turn Required to Ratchet

Material

Beryllium Copper

Stainless Steel

Bolt Clearance Type

Ratcheting

Socket Retainer Style

Socket Shape

Wrench Type

Drive Style

External 8-Point

External 12-Point

External Pentagon

External Square

External Torx Plus

Tamper-Resistant Torx

OD

Power Source

Sold As

Maximum Torque

Less than 1,000 ft·lbf

1,000 ft·lbf to 1,999 ft·lbf

Less than 100 N-m

100 N-m to 249 N-m

250 N-m to 499 N-m

Grip Material

Socket Style

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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1,350 Products

Fastening and Joining

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Wrench Handles

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

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

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Bit Sockets

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

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Drum Plug Sockets

Drum Plug Sockets

Turn with a ratchet wrench to install and remove screw-in drum plugs

Impact Wrenches

Impact Wrenches

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

Wrench Heads

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

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Speeder Handles

Speeder Handles

Crank the handle to fasten nuts and bolts quickly

Bit Adapters

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

Impact Drivers

More powerful than drills to drive screws through dense material and loosen stuck fasteners

Safety Equipment

Hot Stick Heads

Hot Stick Heads

Swap out the head on your hot stick to operate switches, pull cotter pins, and more

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