Class X Pin Gauges | McMaster-Carr

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676 Products

Plug Gauges

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 Gauge Sets

Keep dozens of plug gauges on hand to check a range of hole sizes. You’ll often hear them called pin gauges.

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”. Use these sets to measure hole sizes and depths, check hole locations and distance, and set micrometers.

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.

Threaded Plug Gauges for Internal Threads

Go/No-Go Threaded Plug Gauges with Handle

Speed up thread tolerance checks—the handle on these gauges gives you a good grip to quickly thread and unthread go or no-go gauges.

Acme Threaded Plug Gauges with Handle

Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance. These gauges are attached to a handle to help you quickly thread or unthread them.

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

A go and no-go gauge in one, these gauges check that left-hand threads fall within tolerance.

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

Check that holes tapped for helical threads are within tolerance. To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other.

Threaded Plug Gauges with
Handle for Pipe Threads

Verify whether pipe fitting threads fall within tolerance. These gauges are attached to a handle, giving you a solid gripping point to thread and unthread them quickly.

Threaded Plug Gauges

Test if internal threads fall within tolerance.