Spi 29-794-5 Class Zz Plus Plug Gage 0.794 in Dia

Product Description

The SPI 29-794-5 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.794 inches. It holds a tolerance of 0.0002 inches, making it suitable for go/no-go acceptance inspection in production and quality-control environments. Constructed from steel, this gage delivers the dimensional stability required for consistent, repeatable measurements. Machinists, quality technicians, and tool-room professionals use plug gages like this to confirm that drilled, reamed, or bored features fall within specified tolerance bands before parts move to the next stage of production.

This plug gage is used in shop-floor and inspection-room applications where hole diameter verification is part of the standard quality workflow. It is appropriate for light-to-medium production inspection of machined components across metalworking, fabrication, and precision manufacturing settings. The 0.794-inch nominal diameter targets a specific bore size common in general mechanical assemblies. Its compact form and single-piece construction allow for quick, hand-held checks without the need for additional fixtures or supports.

Key Features

• Nominal measurement diameter of 0.794 inches for targeted bore inspection
• Class ZZ Plus tolerance rating at 0.0002 inches for precise go/no-go verification
• Steel construction for dimensional stability and wear resistance
• Compact, single-piece design suited for hand-held production inspection
• Individual package quantity supports single-unit procurement for toolroom and bench use

Compatibility

Designed as an OEM-style replacement or direct addition to standard plug gage sets used in quality inspection of machined bores with a nominal diameter of 0.794 inches.

Installation Notes

Plug gages are handled and used by quality technicians and machinists and require no power source or mounting hardware. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain dimensional integrity. Do not force the gage into a bore, as improper insertion can cause premature wear and inaccurate readings. Store in a protective case away from temperature extremes to preserve calibration accuracy.