Class X Gauge Pins | McMaster-Carr

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Size-Checking Gauge Class

System of Measurement

Plug Gauge Size

Increment

Gauge Measurement Type

Length

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

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Tool Steel

Surface Smoothness, RMS

Thread Size

Hardness

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

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REACH

Thread Fit

Unified Standard Class 2B

Unified Standard Class 3B

DFARS Specialty Metals

Thread Type

Export Control Classification Number (ECCN)

Pipe Size

Thread Direction

675 Products

Plug Gauges

Class X Plug Gauges

Check hole diameters to a tolerance of 0.00004" or 0.001 mm

40 products

Plug Gauges with Handle

Take go and no-go measurements with a single tool

19 products

Target-Size Plug Gauge Sets

A range of sizes to check hole size and location and set micrometers

65 products

Plug Gauge Sets

Keep multiple sizes of plug gauges on hand

36 products

Go/No-Go Threaded Plug Gauges with Handle

The handle gives you a good grip to quickly thread and unthread go and no-go gauges

234 products

Threaded Plug Gauges

Test if internal threads fall within tolerance

140 products

Threaded Plug Gauges with Handle for Pipe Threads

Verify whether pipe fitting threads fall within tolerance

31 products

Go/No-Go Helical Insert Threaded Plug Gauges with Handle

Check that holes tapped for helical threads are within tolerance

32 products

Acme Threaded Plug Gauges with Handle

Determine if parts with internal Acme threads are within tolerance

20 products

Go/No-Go Left-Hand Threaded Plug Gauges with Handle

Check that left-hand threads fall within tolerance

58 products