Spi 29-663-2 Class Zz Plus Plug Gage 0.663 Inch

Product Description

The SPI 29-663-2 is a Class ZZ Plus plug gage used to verify that a bored, drilled, or reamed hole meets a specified inside diameter tolerance. The gage checks a nominal diameter of 0.663 inches with a tolerance of 0.0002 inches, providing the precision reference needed for go/no-go dimensional inspection on production floors, in tool rooms, and during incoming quality checks. It is constructed from steel for wear resistance and dimensional stability. Machinists, quality technicians, and tooling specialists use this gage during routine inspection of precision-machined components.

This plug gage is suited for inspecting holes in metalworking, manufacturing, and machining applications where tight inside-diameter tolerances must be confirmed. Class ZZ Plus gages are commonly used for general-purpose inspection where a reliable, cost-effective attribute gage is required. Typical install scenarios include production-line spot checks, toolroom verification, and receiving inspection of machined parts requiring a 0.663-inch diameter bore.

Key Features

• Class ZZ Plus tolerance class for general-purpose inside-diameter inspection
• Nominal measurement diameter of 0.663 inches
• Gage tolerance of 0.0002 inches for precise go/no-go verification
• Steel construction for durability and dimensional stability
• Compact, single-piece design for straightforward handheld use

Compatibility

Designed as a general-purpose plug gage for inspecting bored or reamed holes with a nominal inside diameter of 0.663 inches in standard machined components and assemblies.

Installation Notes

Plug gages are handled and used by machinists and quality control technicians and do not require mechanical installation. Store the gage in its protective case when not in use to prevent surface damage. Clean bore surfaces and the gage measuring surface before use to avoid false readings. Never force the gage into an undersized hole, as this can damage the gage or the workpiece.