Comparators | McMaster-Carr

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Mounting Stem Diameter

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Less than 50 in·lbf

50 in·lbf to 99 in·lbf

100 in·lbf to 249 in·lbf

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500 in·lbf or greater

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REACH

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

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

Yes

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613 Products

Measuring and Inspecting

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

344 products

Height Gauges

Measure an object's height and mark workpieces for machining

14 products

Machine Tool Indicators

Find the exact edge of a workpiece without math or guesswork to quickly align your machining setup

6 products

Squareness Gauges

Check frames and machined parts to see if they are leaning or uneven

3 products

Surface Finish Gauges

Compare your surface to the swatches to see if you’ve achieved the desired finish

4 products

Optical Comparators

Magnify your part to check for dimensional accuracy and surface defects

13 products

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

10 products

Color Calibrators

Calibrate your color meter to identify colors with precision

1 product

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

88 products

Torque Gauge Connectors

Replace square-drive connectors on torque gauges

3 products

Torque Sensors

Convert manually applied torque into an electrical signal that you can measure and record

22 products

Fastening and Joining

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

27 products

Bit Adapters

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

3 products

Socket Adapters

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

2 products

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

80 products