Spi 29-832-3 Class Zz Plus Plug Gage 0.832 in

Product Description

The SPI 29-832-3 is a Class ZZ Plus plug gage used to verify bore diameters in precision machining and quality-control applications. It measures a nominal diameter of 0.832 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection routines where tight dimensional conformance is required. Constructed from steel for durability and dimensional stability, this gage is a standard tool in machine shops, manufacturing facilities, and inspection departments. Machinists, quality technicians, and tool-and-die professionals rely on plug gages like this one to confirm hole size compliance quickly and consistently.

The SPI 29-832-3 is intended for use in dimensional inspection of drilled, reamed, or bored holes in metal, plastic, or composite workpieces. Class ZZ Plus gages are commonly used for general-purpose inspection where tolerance control is critical but ultra-precision master gage accuracy is not required. This gage is appropriate for incoming inspection, in-process quality checks, and final part verification in both job-shop and production environments.

Key Features

• Nominal measurement diameter of 0.832 inches for precise bore verification
• Class ZZ Plus tolerance of 0.0002 inches for reliable go/no-go inspection
• Steel construction provides dimensional stability and resistance to wear
• Compact and lightweight at 0.2 pounds for easy single-handed use
• Single-piece package ready for immediate inspection use

Compatibility

Designed as a standard Class ZZ Plus plug gage for general-purpose bore inspection of holes with a nominal diameter of 0.832 inches across a wide range of machined components and materials.

Installation Notes

Plug gages are handled by machinists and quality control technicians — no power source or lockout procedure is required. Handle the gage carefully to avoid dropping or striking it, as impact can alter calibration and render measurements unreliable. Clean the gage and the bore being checked before use to remove chips, coolant, or debris that could affect readings. Store the gage in its case or on a padded surface away from other tooling to prevent surface damage.