3/8" Square Drive Ratchet Wrenches | McMaster-Carr

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System of Measurement

Square Drive Size

Head Style

Overall Length

31/32" to 3 1/16"

Drive Size

Head Shape

Finish

Magnesium Phosphate Coated

Phosphate Coated

Drive Style

External 12-Point

External Pentagon

External Square

External Torx Plus

Tamper-Resistant Hex

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Turn Required to Ratchet

Wrench Style

Socket Shape

Bolt Clearance Type

Ratcheting or Nonratcheting

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Socket Style

Wrench Type

Socket Retainer Style

Wrench Opening Shape

12-Point Sure Grip

Socket Type

Air Hammer Adapter

Finger-Tightening Adapter

Hex Head Adapter

Hex Shank-to-Square Drive Adapter

Quick-Change Adapter

Ratchet Adapter

Secure-Hold Extension

Secure-Hold Socket Adapter

Square Drive Size Adapter

Torque-and-Angle Measuring Adapter

Torque-Limiting Adapter

Material

Stainless Steel

Power Source

OD

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

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1,272 Products

Fastening and Joining

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Sockets

Turn fasteners with an external 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

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

Impact Wrenches

Impact Wrenches

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

Socket Adapters

Socket Adapters

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

Wrench Handles

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

Oil Filter Sockets

Oil Filter Sockets

Twist with a ratchet wrench to adjust filters and other round objects in tight spots

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

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

Impact Drivers

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

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