Threaded Ring Gauges with Calibration Certificate
A certificate of calibration traceable to NIST states that these gauges have passed a test for accuracy. They’re for checking a part’s external threads to ensure they fall within tolerance.
A part is within tolerance if it’s easy to thread a go gauge onto the part but difficult to thread a no-go gauge more than two turns.
Go gauges check the maximum external thread size.
No-go gauges check the minimum external thread size.
Threads have different classes of fit. Thread fit designates the tightness or looseness of the mating threads. For example, inch threads with a 3A fit have tighter tolerances than threads with a 2A fit.
For technical drawings and 3-D models, click on a part number.
Threaded Ring Gauges
Check a part’s external threads to ensure they fall within tolerance.
The part is within tolerance if it’s easy to thread a go gauge onto the part but difficult to thread a no-go gauge more than two turns.
Go gauges check the maximum external thread size.
No-go gauges check the minimum external thread size.
Threads have different classes of fit. Thread fit designates the tightness or looseness of the mating threads. For example, inch threads with a 3A fit have tighter tolerances than threads with a 2A fit.
For technical drawings and 3-D models, click on a part number.
Thread Size | Pitch | Hardness | Material | For Thread Fit | Pitch Dia. Tolerance | Each | |
Go Gauge | |||||||
|---|---|---|---|---|---|---|---|
Class X | |||||||
| M10 | 1.25 mm | Rockwell C60 | Tool Steel | Class 6g | -0.008mm to 0mm | 000000000 | 0000000 |
| M10 | 1.5 mm | Rockwell C60 | Tool Steel | Class 6g | -0.008mm to 0mm | 000000000 | 000000 |
No-Go Gauge | |||||||
Class X | |||||||
| M10 | 1.25 mm | Rockwell C60 | Tool Steel | Class 6g | 0mm to 0.008mm | 000000000 | 000000 |
| M10 | 1.5 mm | Rockwell C60 | Tool Steel | Class 6g | 0mm to 0.008mm | 000000000 | 000000 |