3/4" Square Drive Ratchets | McMaster-Carr

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System of Measurement

Square Drive Size

Overall Length

Drive Size

Head Style

Head Shape

Length

Wrench Style

Finish

Magnesium Phosphate Coated

Material

Aluminum Bronze

Socket Shape

Rounded 4-Point

Turn Required to Ratchet

Ratcheting

Bolt Clearance Type

OD

Power Source

Sold As

Drive Style

External 8-Point

External 12-Point

External Octagon

External Rounded Square

External Square

Maximum Torque

Less than 1,000 ft·lbf

1,000 ft·lbf to 1,999 ft·lbf

2,000 ft·lbf to 2,999 ft·lbf

250 N-m to 499 N-m

500 N-m to 999 N-m

1,000 N-m or greater

Wrench Type

Socket Retainer Style

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

RoHS

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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484 Products

Ratchet Wrenches

Ratchet Wrenches

Ratchet Wrenches

Turn fasteners without removing and repositioning the wrench

Replaceable-Head Ratchet Wrenches

Replaceable-Head Ratchet Wrenches

When the head becomes worn or damaged, change it out for a new one

Quick-Release Ratchet Wrenches

Quick-Release Ratchet Wrenches

Push a button to release the socket from the wrench

Adjustable-Length Ratchet Wrenches

Adjustable-Length Ratchet Wrenches

The shaft extends and locks for further reach

Nonsparking Ratchet Wrenches

Nonsparking Ratchet Wrenches

Made of aluminum-bronze that won't generate sparks in hazardous locations

Adjustable-Length Quick-Release Ratchet Wrenches

Adjustable-Length Quick-Release Ratchet Wrenches

Extend the length and lock in place at set increments for more reach

Other Products

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

Wrench Handles

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

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Impact Wrenches

Impact Wrenches

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

Bit Sockets

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

Ball Joint Sockets

Ball Joint Sockets

Install and remove ball joints in suspension and steering systems

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