3/8" Square Drive Socket Wrench Adapters | McMaster-Carr

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Square Drive Size Adapter

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295 Products

Socket Adapters

Socket Adapters

Square Drive Size Adapters

Square Drive Size Adapters

Convert from one square drive size to another

Convertible Square Drive Size Adapters

Convertible Square Drive Size Adapters

Push the square drive through the adapter to change size

Square Drive Adapters for Box Wrenches

Square Drive Adapters for Box Wrenches

Convert a ratcheting box wrench into a ratcheting socket wrench

Square Drive Adapters for Power Tools

Square Drive Adapters for Power Tools

Attach square-drive sockets to drills, powered screwdrivers, and other hex-shank tools

Hex Shank to Square Drive Adapters

Hex Shank to Square Drive Adapters

Install in your bit screwdriver to turn sockets

Flex Socket Adapters

Flex Socket Adapters

Convert your socket into a flex socket to access fasteners from an angle

Flex Socket Adapter Sets

Flex Socket Adapter Sets

Keep a range of adapter sizes on hand to convert sockets into flex sockets

Ratcheting Socket Adapters

Ratcheting Socket Adapters

Change a standard wrench handle into a ratcheting wrench

Square Drive Size Adapter Sets

Square Drive Size Adapter Sets

Keep a range of adapter sizes on hand to convert from one square drive size to another

Finger-Tightening Socket Adapters

Finger-Tightening Socket Adapters

Fit between a wrench and socket, and spin the adapter with a finger to tighten

Strong-Hold Flex Socket Adapters

Strong-Hold Flex Socket Adapters

Convert your socket into a flex socket without worrying about the adapter falling off

Strong-Hold Socket Adapters

Strong-Hold Socket Adapters

Lock to your tool and socket to prevent accidental disengagement

Fixed Torque-Limiting Socket Adapters

Fixed Torque-Limiting Socket Adapters

Come set to a specific torque limit for tasks needing the same torque every time

Adjustable Torque-Limiting Socket Adapters

Adjustable Torque-Limiting Socket Adapters

Set a desired torque to prevent overtightening and damaging fasteners

Electrically-Insulating Square Drive Size Adapters

Electrically-Insulating Square Drive Size Adapters

Insulated to protect against shock from accidental contact with live circuits

Torque-and-Angle Measuring Socket Adapters

Torque-and-Angle Measuring Socket Adapters

A digital display shows how torque measurements change as you turn the wrench

Impact Socket Adapters

Impact Square Drive Adapter Sets for Power Tools

Impact Square Drive Adapter Sets for Power Tools

Keep a range of adapter sizes on hand to attach impact square-drive sockets to hex-shank power tools

Impact Square Drive Size Adapters

Impact Square Drive Size Adapters

Convert from one square drive size to another

Impact Square Drive Size Adapter Sets

Impact Square Drive Size Adapter Sets

Keep a range of adapter sizes on hand to convert your impact tools from one square drive size to another

Impact Quick-Change Socket Adapters

Impact Quick-Change Socket Adapters

Pull the collar to quickly attach and remove sockets

Impact Square Drive Adapters for Air Hammers

Impact Square Drive Adapters for Air Hammers

Combine air-hammer pulses and a hand wrench to loosen stuck fasteners without breaking them

Impact Square Drive Adapters for Power Tools

Impact Square Drive Adapters for Power Tools

Attach impact square-drive sockets to power drills, impact drivers, and other hex-shank tools

Impact Flex Socket Adapters

Impact Flex Socket Adapters

Convert your impact socket into a flex socket to access fasteners from an angle

Continuous-Use Socket Adapters

Continuous-Use Square Drive Size Adapters

Continuous-Use Square Drive Size Adapters

Last longer than standard impact adapters to tolerate high-volume applications

Continuous-Use Square Drive Adapters for Power Tools

Continuous-Use Square Drive Adapters for Power Tools

Connect sockets to impact wrenches and other power tools in high-volume applications

Other Products

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Wrench Heads

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

Sockets

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

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Bit Adapters

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

Ratchet Wrench/Screwdrivers

Ratchet Wrench/Screwdrivers

Switch between sockets and bits to turn a variety of fasteners with a single tool

Wrench Handles

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

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