Spi 29-083-3 Class Zz Plus Plug Gage 0.083 Inch

Product Description

The SPI 29-083-3 is a Class ZZ Plus plug gage designed for precision bore and hole inspection in machining and quality-control environments. It measures inside diameters to a nominal size of 0.083 inches with a tolerance of 0.0002 inches, providing the close accuracy required for go/no-go inspection work. The gage body is constructed from steel for durability and dimensional stability during repeated use. Machinists, tool-and-die technicians, and quality inspectors use plug gages like the 29-083-3 to verify that drilled, reamed, or bored features conform to print tolerances before parts advance to assembly.

This plug gage is suited for use in precision manufacturing, tool shops, and inspection departments where small-diameter hole verification is required. The 0.083-inch nominal diameter targets fine bore applications common in small-part machining. It is appropriate for both job-shop and production-floor environments where traceable dimensional verification is part of the quality process. The compact size makes it easy to use in confined inspection setups.

Key Features

• Class ZZ Plus accuracy with 0.0002-inch tolerance for precise go/no-go hole inspection
• 0.083-inch nominal measurement diameter for small-bore applications
• Steel construction for dimensional stability and long service life
• Compact single-piece design suited for bench and floor inspection use
• Package quantity of one gage per unit for straightforward ordering

Compatibility

Designed as an OEM-style Class ZZ Plus plug gage for use in standard go/no-go inspection applications requiring a 0.083-inch nominal bore diameter measurement.

Installation Notes

Plug gages are handled and used by machinists, quality technicians, and inspection personnel — no installation in the traditional sense applies. Store the gage in its protective case when not in use to prevent nicks or corrosion that would affect measurement accuracy. Clean the gage and the bore being inspected before use to prevent debris from producing false readings. Do not force the gage into an undersized bore, as this can damage the gage land and compromise calibration.