1/2" Torque Wrenches | McMaster-Carr

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System of Measurement

Square Drive Size

Unit of Measure

Torque

100 ft·lbf to 249 ft·lbf

250 ft·lbf to 499 ft·lbf

Head Style

Maximum Torque

Less than 1,000 ft·lbf

1,000 ft·lbf to 1,999 ft·lbf

Ratcheting

Wrench Style

Certificate Type

Calibration Certificate Traceable to NIST

Calibration Certificate with Test Data

Calibration Certificate with Test Data Traceable to UKAS

Display Type

Drive Style

Torque Setting

3 ft·lbf to 15 ft·lbf

180 in·lbf to 30 ft·lbf

30 ft·lbf to 150 ft·lbf

30 ft·lbf to 90 ft·lbf

Torque-Limiting Direction

Clockwise

Clockwise and Counterclockwise

Torque Adjustability

Torque Wrench Type

Container Type

Power Source

Grip Material

Torque-Limiting Mechanism

Material

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

RoHS

REACH

111 Products

About Torque Tools

Adjustable Torque Wrenches

Set the desired torque and the wrench indicates when it's reached with an audible click and an impulse in the grip.

Flex-Head Adjustable Torque Wrenches

Pivot the head to access fasteners in tight spots.

Quick-Release Adjustable Torque Wrenches

No need to pull the socket off the tool—push a button to release.

No-Reset Adjustable Torque Wrenches

Unlike most torque wrenches, you don’t have to return the torque setting to the lowest value after use. These tools are also known as split-beam torque wrenches.

Nonsparking Torque Wrenches

Made of beryllium copper, these wrenches satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Electrical-Insulating Adjustable Torque Wrenches

Insulated to protect against accidental contact with live electrical circuits, these wrenches are tested to 1,000 volts to meet IEC 60900.

Economy Torque-Measuring Wrenches

These wrenches have an accuracy of ±2.0%.

Torque-Measuring Wrenches

Measure with an accuracy of ±2%.

High-Accuracy Torque-Measuring Wrenches

Trust the precision of your measurements—these wrenches are accurate to ±1%.

Data-Recording Torque-and-Angle
Measuring Wrenches

The most advanced torque wrenches we offer, these tools store and recall up to 1,500 torque and angle measurements.

Dial Torque-Measuring Wrenches

A main pointer on the dial shows torque as it’s being applied and a memory pointer indicates the maximum torque reached.

High-Accuracy Horizontal-Scale
Torque-Measuring Wrenches

Trust the precision of your measurements—these wrenches are accurate to ±2%.

Horizontal-Scale Torque-Measuring Wrenches

Measure with an accuracy of ±7%.

Slip-Release Factory-Set Torque Wrenches

These wrenches slip to disengage and stop turning the fastener when the set torque is reached, preventing overtightening.

Click-Style Factory-Set Torque Wrenches

When the set torque is reached, these wrenches signal with an audible click and an impulse in the grip.

Hammer-Driven Impact Wrenches

Also known as impact drivers, use these tools with impact sockets to break frozen bolts and screws free. Strike with a hammer to tighten and loosen fasteners.

Heavy Duty Air-Powered Impact Wrenches

Built to withstand tough environments, these wrenches have steel or titanium housings to protect them if they fall.

Air-Powered Impact Wrenches

Loosen stubborn fasteners—these wrenches operate at full torque counterclockwise to break stuck bolts free.

Cordless Impact Wrenches

Use these wrenches with impact sockets only.

Dual-Drive Cordless Impact Wrenches

Switch between sockets and bits with these two-in-one tools to drive different types of fasteners with high force. Their versatility makes them ideal for use in the field for construction work and maintenance on heavy equipment.

Electric Impact Wrenches

Use these wrenches with impact sockets only.

Socket Adapters and Extensions

Torque-and-Angle Measuring Socket Adapters

A digital display shows how torque measurements change as you turn the wrench. Set the desired torque and angle—lights and an audible alarm indicate when target has been reached or exceeded.

Adjustable Torque-Limiting Socket Adapters

Set a desired torque within the range.

Factory-Set Torque-Limiting Socket Adapters

Already set to a specific torque limit, these adapters audibly click and release when you reach that setting to prevent overtightening.

Impact Torque-Limiting Socket Adapters

Prevent overtightening that can damage fasteners. These adapters spring back slightly when the set torque is reached.

Impact Torque-Limiting Socket Adapter Sets

Prevent overtightening that can damage fasteners. These adapters spring back slightly when the set torque is reached.

Changeable-Head Torque Wrenches

Change heads to use these tools as an open-end, box, square drive, or hex-key wrench.

Torque Testers and Gauges

Square Drive Torque Tool Testers

Place your tool and the included square drive connector on the tester and turn.

High-Accuracy Torque Tool Testers

Accurate to within ±1%, these torque testers are often used to check the accuracy of torque wrenches and screwdrivers on assembly lines.

Rotary Torque Testers

Monitor torque as you apply it—these testers mount between your torque tool and your fastener.

Data-Recording Torque Gauges

Use these gauges with changeable sensors and square-drive sockets to display, collect, and download torque readings.