Spi 29-100-5 Class Zz Plus Plug Gage 0.1 Inch

Product Description

The SPI 29-100-5 is a Class ZZ Plus plug gage designed for precise bore and hole measurement in machining and inspection applications. Built to a nominal diameter of 0.1 inches with a tolerance of 0.0002 inches, this gage provides reliable go/no-go verification for tight-tolerance work. Constructed from steel, it is suited for use in quality control environments where dimensional accuracy is critical. Machinists, toolmakers, and inspection technicians use plug gages like this to verify that drilled, reamed, or bored holes fall within specified limits before assembly or final release.

This plug gage is intended for use in precision manufacturing, toolroom, and inspection environments. It is appropriate for checking small-diameter holes in metal, plastic, or composite workpieces where holding close tolerances is required. The 0.1-inch nominal size makes it a common reference gage for small bore work encountered in both production and job-shop settings. Typical users include quality control inspectors and machinists working to tight engineering drawing callouts.

Key Features

• Nominal measurement diameter of 0.1 inches for small-bore inspection
• Class ZZ Plus tolerance of 0.0002 inches for accurate go/no-go gauging
• Steel construction for durability and dimensional stability
• Compact, single-piece design for easy handheld use
• Suitable for production inspection and toolroom verification

Compatibility

Designed as a standard Class ZZ Plus plug gage for use in go/no-go bore inspection applications requiring a 0.1-inch nominal diameter measurement.

Installation Notes

Plug gages are handled and applied by machinists or quality control inspectors and do not require power tools or electrical isolation. Clean the gage and workpiece bore thoroughly before use to avoid false readings caused by chips or debris. Store the gage in its case when not in use to protect the ground surfaces from nicks and corrosion. Periodic calibration against a traceable standard is recommended to maintain measurement integrity.