Eisen, Japan
Eisen SPZ Series Limit Screw Gauge

Made in Japan
Manufacturer: Eisen Co., Ltd.
Model: SPZ Series
Ceramic thread plug gauge for metric threads
About the Series
Features
Only the frequently used GO side gauge is made of ceramics. The NO GO side gauge is made of steel equivalent to the conventional SKS3, achieving wear resistance and low cost.
It has a lifespan 5 to 10 times longer than steel plug gauges.
Depends on the material of the object being measured.
We also handle thread gauges other than standard stock items.
Series Details
Example of notation

Life test results
| Thread Nominal | pitch | Gauge Type | Grade | |
|---|---|---|---|---|
| M1.4 | 0.3 | Regular | GPIP (for JIS inspection) GPWP (for JIS work) GPNP (ISO) | Ⅱ (JIS grade) 6H (ISO grade) |
| M1.6 | 0.35 | Regular | ||
| M1.7 | 0.35 | Regular | ||
| M1.8 | 0.35 | Regular | ||
| M2 | 0.4 | Regular | ||
| M2.3 | 0.4 | Regular | ||
| M2.5 | 0.45 | Regular | ||
| M2.6 | 0.45 | Regular | ||
| M3 | 0.5 | Regular | ||
| M4 | 0.7 | Regular | ||
| M5 | 0.8 | Regular | ||
| M6 | 1.0 | Regular | ||
| M8 | 1.25 | Regular | ||
| M8 | 1.0 | Details | ||
| M10 | 1.5 | Regular | ||
| M10 | 1.25 | Details | ||
| M10 | 1.0 | Details | ||
| M12 | 1.75 | Regular | ||
| M12 | 1.5 | Details | ||
| M12 | 1.25 | Details | ||
- Special sizes are also available.
- (Fine, extra fine, unified, helical insert, pre-plating setting, etc.
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