Metric Class Z Plug Gauges
These metric Class Z plug gauges are used for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers. They’re also known as 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 Plug Gauge Size | Increment | Length | Surface Smoothness (RMS), microinch | Hardness | Material | Plug Gauge Tolerance | Each | |
Go Gauge | ||||||||
---|---|---|---|---|---|---|---|---|
0.22 mm to 1.51 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 000000 |
1.52 mm to 12.71 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 0000 |
12.72 mm to 15.31 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
15.32 mm to 17.81 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
17.82 mm to 20.37 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
20.38 mm to 22.05 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
22.06 mm to 23.73 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
23.74 mm to 25.41 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | 0 mm to 0.0025 mm | 000000 | 00000 |
No-Go Gauge | ||||||||
0.22 mm to 1.51 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 000000 | 00000 |
1.52 mm to 12.71 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 0000 |
12.72 mm to 15.31 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
15.32 mm to 17.81 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
17.82 mm to 20.37 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
20.38 mm to 22.05 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
22.06 mm to 23.73 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
23.74 mm to 25.41 mm | 0.01 mm | 2" | 8 | Rockwell C60 | Tool Steel | -0.0025 mm to 0 mm | 0000000 | 00000 |
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 |
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. They 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.
Check the minimum hole diameter with the go gauge end, and check the maximum hole diameter with the no-go gauge end. If the go gauge enters the hole and the no-go gauge is unable to enter, the hole is within tolerance.
Choose a Plug Gauge Size | Increment | Go Plug Gauge Tolerance | No-Go Plug Gauge Size Tolerance | Lg. | Surface Smoothness (RMS), microinch | Hardness | Material | Each | |
0.2200 mm to 1.9100 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 5 1/4" | 8 | Rockwell C60 | Tool Steel | 00000000 | 000000 |
1.9200 mm to 4.5700 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 5 15/32" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
4.5800 mm to 7.1400 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 6 1/8" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
7.1500 mm to 10.3100 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 6 19/32" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
10.3200 mm to 12.9500 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 7 3/16" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
12.9600 mm to 16.1300 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 7 17/32" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
16.1400 mm to 19.3000 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 7 17/32" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
19.3100 mm to 25.6500 mm | 0.01 mm | 0 mm to 0.0025 mm | -0.0025 mm to 0 mm | 7 21/32" | 8 | Rockwell C60 | Tool Steel | 00000000 | 00000 |
Choose a Plug Gauge Size | Increment | Go Plug Gauge Tolerance | No-Go Plug Gauge Size Tolerance | Lg. | Surface Smoothness (RMS), microinch | Hardness | Material | Each | |
0.1010 mm to 0.3810 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 5 1/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 0000000 |
0.3820 mm to 0.7620 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 5 1/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
0.7630 mm to 1.9050 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 5 1/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
1.9060 mm to 4.5720 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 5 1/2" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
4.5730 mm to 7.1370 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 6 1/8" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
7.1380 mm to 10.3120 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 6 3/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
10.3130 mm to 12.9540 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 7 1/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
12.9550 mm to 16.1290 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 7 1/2" | 4 | Rockwell C60 | Tool Steel | 0000000 | 00000 |
16.1300 mm to 19.3040 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 7 3/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 000000 |
19.3050 mm to 25.6540 mm | 0.001 mm | 0 mm to 0.001 mm | -0.001 mm to 0 mm | 8 1/4" | 4 | Rockwell C60 | Tool Steel | 0000000 | 000000 |
Plug Gauge Sets
Take precision go/no-go measurements of hole sizes and depths, check hole location and distance, and set micrometers. These sets have 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.
Size | Increment | No. of Pieces | Lg. | Surface Smoothness (RMS), microinch | Material | Plug Gauge Tolerance | Each | |
Go Gauges | ||||||||
---|---|---|---|---|---|---|---|---|
With Case | ||||||||
Class Z | ||||||||
0.2200mm to 1.5000mm | 0.02mm | 65 | 2" | 8 | Tool Steel | 0mm to 0.0025mm | 0000000 | 0000000 |
Class ZZ | ||||||||
1.3000mm to 4.9800mm | 0.02mm | 185 | 2" | 10 | Tool Steel | 0mm to 0.005mm | 0000000 | 000000 |
5.0000mm to 9.9800mm | 0.02mm | 250 | 2" | 10 | Tool Steel | 0mm to 0.005mm | 0000000 | 000000 |
10.0000mm to 13.9800mm | 0.02mm | 200 | 2" | 10 | Tool Steel | 0mm to 0.005mm | 0000000 | 000000 |
No-Go Gauges | ||||||||
With Case | ||||||||
Class Z | ||||||||
0.2200mm to 1.5000mm | 0.02mm | 65 | 2" | 8 | Tool Steel | -0.0025mm to 0mm | 0000000 | 000000 |
Class ZZ | ||||||||
1.3000mm to 4.9800mm | 0.02mm | 185 | 2" | 10 | Tool Steel | -0.005mm to 0mm | 0000000 | 000000 |
5.0000mm to 9.9800mm | 0.02mm | 250 | 2" | 10 | Tool Steel | -0.005mm to 0mm | 0000000 | 000000 |
10.0000mm to 13.9800mm | 0.02mm | 200 | 2" | 10 | Tool Steel | -0.005mm to 0mm | 0000000 | 000000 |
Threaded Plug Gauges with Calibration Certificate
These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They allow you to inspect internal threads on parts. All have a go gauge on one end and a no-go gauge on the other end. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.
Class 6H | ||||||
---|---|---|---|---|---|---|
Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | Each | |
Class X | ||||||
M1.6 | 0.35mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 0000000 |
M2 | 0.4mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M3 | 0.5mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M3.5 | 0.6mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M4 | 0.7mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M5 | 0.8mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M6 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M7 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M8 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M8 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M10 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M10 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M12 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M12 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M12 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M12 | 1.75mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M14 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M16 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M16 | 2mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
M18 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
Threaded Plug Gauges
These have a go gauge on one end and a no-go gauge on the other end. They allow you to inspect internal threads on parts. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.
Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | For Thread Fit | Each | |
Class X | |||||||
---|---|---|---|---|---|---|---|
M1.6 | 0.35mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 0000000 |
M2 | 0.4mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M3 | 0.5mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M3.5 | 0.6mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M4 | 0.7mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M5 | 0.8mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M6 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M8 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M8 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M10 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M10 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M12 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M12 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M12 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M12 | 1.75mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M14 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M16 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M16 | 2mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
M18 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |