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. 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) | Hardness | Material | Gauge Tolerance | Each | |
Go Gauge | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.101mm to 0.381mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 000000 |
| 0.382mm to 0.762mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 00000 |
| 0.763mm to 1.905mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 00000 |
| 1.906mm to 4.572mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 00000 |
| 4.573mm to 7.137mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 0000000 | 00000 |
| 7.138mm to 10.312mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 0000000 | 00000 |
| 10.313mm to 12.954mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 0000000 | 00000 |
| 12.955mm to 16.129mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 00000 |
| 16.130mm to 19.304mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm | 000000 | 00000 |
| 19.305mm to 20.960mm 20.963mm to 25.654mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | 0mm to 0.001mm 0mm to 0.0015mm | 000000 | 00000 |
No-Go Gauge | ||||||||
| 0.101mm to 0.381mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 000000 | 00000 |
| 0.382mm to 0.762mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 000000 | 00000 |
| 0.763mm to 1.905mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 1.906mm to 4.572mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 4.573mm to 7.137mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 7.138mm to 10.312mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 10.313mm to 12.954mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 12.955mm to 16.129mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 16.130mm to 19.304mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm | 0000000 | 00000 |
| 19.305mm to 20.960mm 20.963mm to 25.654mm | 0.001mm | 2" | 4 microinch | Rockwell C60 | Tool Steel | -0.001mm to 0mm -0.0015mm to 0mm | 0000000 | 00000 |