Hole Gauges | McMaster-Carr

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System of Measurement

Plug Gauge Size

Material

Length

Gauge Measurement Type

No-Go

Size-Checking Gauge Class

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Not Compliant

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate

Distance Measured

Hardness

Surface Smoothness, RMS

Gauge Size

Thread Size

Manufacturer

Shape

Finish

Titanium Nitride (TiN) Coated

Measures

Increment

Display Type

Thread Type

Container Type

Thread Fit

Unified Standard Class 2B

Unified Standard Class 3B

Measuring Increments

2,209 Products

Measuring and Inspecting

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

129 products

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

1,055 products

Inside Hole Calipers

Measure hard-to-reach areas, such as internal grooves and slots

12 products

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

29 products

Micrometer Check Gauges

Confirm your outside or depth micrometers are accurate

1 product

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

738 products

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

11 products

Depth Gauges

Reach into slots, counterbores, and other holes to measure depth

33 products

Depth Micrometers

Measure slots, counterbores, and other holes more precisely than depth gauges

33 products

Height Gauges

Measure an object's height and mark workpieces for machining

3 products

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

70 products

Inside/Outside Diameter Gauges

Mount your variance indicator to measure the diameter of rims, grooves, and shallow holes

2 products

Chamfer Gauges

Check the diameter of chamfered edges to make sure they're within tolerance

21 products

Countersink Gauges

Catch sizing errors in countersunk holes to keep fasteners from protruding and creating weak points

24 products

Fastening and Joining

Tungsten Electrode Stick-Out Gauges

Measure the distance tungsten electrodes stick out from your nozzle for consistent TIG welding

2 products