Hole Gauges | McMaster-Carr

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2,209 Products

Measuring and Inspecting

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

Plug Gauges

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

Inside Hole Calipers

Inside Hole Calipers

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

Inside Hole Micrometers

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

Micrometer Check Gauges

Micrometer Check Gauges

Confirm your outside or depth micrometers are accurate

Gauge Blocks

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

Depth Gauges

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

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

Depth Micrometers

Depth Micrometers

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

Height Gauges

Measure an object's height and mark workpieces for machining

Threaded Hole Location Gauges

Threaded Hole Location Gauges

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

Inside/Outside Diameter Gauges

Inside/Outside Diameter Gauges

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

Chamfer Gauges

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

Countersink Gauges

Countersink Gauges

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

Fastening and Joining

Tungsten Electrode Stick-Out Gauges

Tungsten Electrode Stick-Out Gauges

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

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