Spi 29-517-0 Class Zz Plus Plug Gage 0.517 in Steel

Product Description

The SPI 29-517-0 is a Class ZZ Plus plug gage machined to a 0.517-inch nominal diameter with a bilateral tolerance of 0.0002 inches. Plug gages are go/no-go inspection tools used to verify bore and hole diameters against specified tolerances. This gage is constructed from steel for dimensional stability and wear resistance. Metrology technicians, machinists, and quality control inspectors use Class ZZ gages for workshop-level inspection of production parts where high-precision laboratory-grade tolerances are not required but reliable measurement is still critical.

The 29-517-0 is suited for use in machine shops, manufacturing facilities, and production inspection stations. It is appropriate for verifying drilled, reamed, or bored holes at the 0.517-inch nominal size. This gage fits standard inspection workflows where parts must be checked against dimensional specifications before assembly or final release. It is commonly used in general metalworking and light industrial manufacturing environments.

Key Features

• Class ZZ Plus tolerance rating for workshop-level go/no-go inspection
• 0.517-inch nominal diameter for precise bore verification
• 0.0002-inch bilateral tolerance for consistent measurement accuracy
• Steel construction provides durability and dimensional stability under regular use
• Compact and lightweight at 0.2 pounds for easy bench or field handling

Compatibility

Designed as a standard plug gage for inspecting bored, drilled, or reamed holes at a nominal diameter of 0.517 inches in general machining and production inspection applications.

Installation Notes

Plug gages are inspection tools and do not require permanent installation. Before use, clean the gage and the hole being measured to remove chips, coolant, or debris that could affect readings. Handle the gage with care to avoid dropping or striking it against hard surfaces, as impact damage can alter calibration. Gages should be stored in a protective case and periodically recalibrated according to your quality management system requirements.