Class X Gauge Pins | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Thread Size Thread Size

	Thread Type Thread Type

	Pipe Size Pipe Size

	For Thread Fit For Thread Fit

Class 2B

Class 3B

Class 6H

	Number of Pieces Number of Pieces

	Container Type Container Type

Case

	Plug Gauge Size Tolerance (Range) Plug Gauge Size Tolerance (Range)

-0.00004"

0.00004"

	Pitch Pitch

	Finish Finish

Chrome Plated

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Size Checking

Class X Plug Gauges

Also known as pin gauges, these Class X plug gauges are used for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers.

Metric Class X Plug Gauges

Use these metric Class X plug gauges for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers. They’re also called pin gauges.

Plug Gauges with Handle

Take go and no-go measurements with the same tool. These gauges have a go gauge on one end, a no-go gauge on the other end, and a handle with bushings.

Target-Size Plug Gauge Sets

Get your choice of one target-size gauge with 12 larger gauges and 12 smaller gauges, graduated in 0.0001”. Also known as tenth-step gauges, they’re often used in metrology labs, quality control departments, and tool rooms for setting snap gauges and comparators.

Threaded Plug Gauges

These have a go gauge on one end and a no-go gauge on the other end.

Threaded Plug Gauges with Calibration Certificate

These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Threaded Plug Gauges for NPT Pipe
Threads with Calibration Certificate

Ensure the accuracy of NPT thread measurements—these gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Threaded Plug Gauges for NPT Pipe Threads

A notch on the handle indicates when the internal NPT threads you’re checking are in tolerance.