Spi 29-906-5 Class Zz Plus Plug Gage 0.906 Inch

Product Description

The SPI 29-906-5 is a Class ZZ Plus plug gage designed for go/no-go inspection of 0.906-inch diameter bored holes and machined features. Class ZZ Plus gages meet ANSI/ASME B89.1.5 tolerance standards for working gages, with a bilateral tolerance of 0.0002 inches, making this tool appropriate for production-floor dimensional verification. The gage body is manufactured from steel for durability and wear resistance. Machinists, quality technicians, and tool-and-die professionals use this type of gage to confirm that a feature falls within specified dimensional limits without requiring a precision measuring instrument at the point of use.

This plug gage is suited for use in machine shops, manufacturing facilities, and quality control environments where 0.906-inch diameter holes must be verified to tight tolerances. It is used during incoming inspection, in-process checking, and final acceptance of machined components. The compact single-piece format allows use in confined setups and on the shop floor without elaborate fixturing.

Key Features

• Class ZZ Plus tolerance classification for working gage applications
• 0.906-inch nominal measurement diameter
• 0.0002-inch bilateral tolerance for precise dimensional verification
• Steel construction for wear resistance and dimensional stability
• Compact, single-piece design for easy handling at point of inspection

Compatibility

Designed as an OEM-style working plug gage for go/no-go inspection of 0.906-inch nominal diameter features in standard machined components.

Installation Notes

Plug gages are handled and used by machinists and quality technicians and require no power source or mounting. Clean the gage and the bore to be checked before use to prevent debris from affecting readings. Do not force the gage into a bore; excessive force can damage the gage surface and affect accuracy. Store in a protective case away from temperature extremes to maintain dimensional stability.