Eisen, Japan
Eisen SPW Series Limit Screw Gauge

Made in Japan
Manufacturer: Eisen Co., Ltd.
Model: SPW Series
Carbide Thread Plug Gauge for Metric Threads Half Type & Single Type
About the Series

Features
- Only the frequently used GO side gauge uses carbide alloy. The NO GO side gauge uses 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.)











