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Go/No-Go Hex Plug Gauges with Handle
Confirm hex drives on socket head screws are within tolerance. A go and no-go gauge in one, these gauges are handy for testing hole size and depth in machining and manufacturing. Their handle gives you a good grip to insert each end into the hole you’re measuring. If the go gauge enters the hole and the no-go gauge is unable to enter, the hole is within tolerance. Gauges are made of tool steel, the most common material for plug gauges, because it’s strong, hard, and resistant to wear.
All come with a certificate of compliance traceable to NIST to certify their sizes are within tolerance. They also meet ASME B18.3, the same dimensional standards for hex drive fasteners.
For technical drawings and 3-D models, click on a part number.
Plug Gauge Size Tolerance | ||||||||
|---|---|---|---|---|---|---|---|---|
| Plug Gauge Size | Go | No-Go | Hardness | Material | End Color | Specifications Met | Each | |
| 0.028" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 0000000 |
| 0.035" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.05" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.0625" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.0781" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.0938" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.1094" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.125" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.1406" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.1563" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.1875" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.2188" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.25" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.3125" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.375" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.4375" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.5" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.5625" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.625" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.75" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 0.87" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 1" | 0" to 0.0001" | -0.0001" to 0" | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 1.5mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 2mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 2.5mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 3mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 4mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 5mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 6mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 8mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 10mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 12mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 14mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 17mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 19mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 22mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |
| 24mm | 0mm to 0.003mm | -0.003mm to 0mm | Rockwell C60 | Tool Steel | Green, Red | ASME B18.3 | 0000000 | 000000 |