Spi 29-867-9 Class Zz Plus Plug Gage 0.867 in

Product Description

The SPI 29-867-9 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a nominal measurement of 0.867 inches. Built from steel, this go/no-go style gage delivers a diameter tolerance of 0.0002 inches, making it appropriate for precision inspection work in machine shops, manufacturing facilities, and quality control environments. Metrology technicians and machinists use plug gages to confirm that drilled, reamed, or bored features fall within specified dimensional limits before parts advance to assembly or shipping.

Class ZZ Plus plug gages are suited for inspection of production parts where moderate tolerance control is required. This gage is commonly applied in general manufacturing and job-shop environments to check hole acceptance on metal and engineered components. The compact, single-unit package makes it practical for bench inspection or inline quality checks on the shop floor.

Key Features

• 0.867 inches nominal diameter for precise bore verification
• 0.0002 inches diameter tolerance meets Class ZZ Plus classification standards
• Steel construction provides durability and dimensional stability
• Compact single-unit form factor suitable for bench or inline inspection
• Supports go/no-go acceptance decisions without additional tooling

Compatibility

Designed as an OEM-style replacement or direct addition to Class ZZ Plus plug gage sets used for 0.867 inches nominal bore inspection in general manufacturing and quality control applications.

Installation Notes

Plug gages are handled and applied by metrology technicians or machinists following standard inspection procedures. Before use, clean the gage and the bore being measured to remove chips, coolant, or debris that could affect measurement accuracy. Store the gage in its case when not in use to prevent wear and corrosion. Do not force the gage into a bore, as this can damage the gage surface and produce inaccurate readings.