Spi 29-795-2 Class Zz Plus Plug Gage 0.795 in

Product Description

The SPI 29-795-2 is a Class ZZ Plus plug gage designed to verify bore diameters with a nominal measurement of 0.795 inches. It holds a tolerance of 0.0002 inches, meeting the requirements of Class ZZ Plus precision classification. Constructed from steel for dimensional stability and wear resistance, this gage is used as a go/no-go check tool to confirm that machined holes fall within specified tolerance bands. Machinists, toolroom technicians, and quality control inspectors use plug gages during in-process and final inspection of drilled, reamed, or bored holes.

This plug gage is suited for shop-floor and inspection-room environments where accurate hole verification is required. It is commonly used in manufacturing, metalworking, and precision machining operations to validate bore size conformance on production parts. The 0.795-inch diameter covers a specific range of drilled or reamed bore applications common in general-purpose machining work.

Key Features

• Class ZZ Plus precision classification with 0.0002-inch tolerance
• Nominal measurement diameter of 0.795 inches
• Steel construction for dimensional stability and durability
• Single-piece package — ready for immediate use out of the box
• Suited for go/no-go bore verification in production and inspection settings

Compatibility

Designed as a standard Class ZZ Plus plug gage for verifying bores with a nominal diameter of 0.795 inches in general machining and inspection applications.

Installation Notes

Plug gages are handled and used by machinists, toolroom technicians, and quality inspectors — no permanent installation is required. Before use, clean both the gage and the bore of chips, oil, and debris to ensure accurate readings. Avoid dropping or striking the gage, as impact damage can alter the precision ground surface and compromise measurement accuracy. Store in a protective case away from temperature extremes to maintain dimensional stability.