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. All come with a certificate of accuracy traceable to NIST that states they've passed a test for accuracy.
If a go gauge can enter the hole and a no-go gauge is unable to enter, the hole is within tolerance.
Go gauges check the minimum hole diameter.
No-go gauges check the maximum hole diameter.
For technical drawings and 3-D models, click on a part number.
| Choose a Size | Increment | Length | Surface Smoothness (RMS), microinch | Hardness | Material | Gauge Tolerance | Each | |
Go Gauge | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.0040" to 0.0150" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 000000 |
| 0.0151" to 0.0300" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.0301" to 0.0750" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.0751" to 0.1800" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.1801" to 0.2810" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.2811" to 0.4060" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.4061" to 0.5100" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.5101" to 0.6350" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.6351" to 0.7600" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" | 00000000 | 00000 |
| 0.7601" to 0.8250" 0.8251" to 1.0100" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | 0" to 0.00004" 0" to 0.00006" | 00000000 | 00000 |
No-Go Gauge | ||||||||
| 0.0040" to 0.0150" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.0151" to 0.0300" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.0301" to 0.0750" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.0751" to 0.1800" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.1801" to 0.2810" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.2811" to 0.4060" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.4061" to 0.5100" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.5101" to 0.6350" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.6351" to 0.7600" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" | 00000000 | 00000 |
| 0.7601" to 0.8250" 0.8251" to 1.0100" | 0.0001" | 2" | 4 | Rockwell C60 | Tool Steel | -0.00004" to 0" -0.00006" to 0" | 00000000 | 00000 |