Spi 29-608-7 Class Zz Plus Plug Gage 0.608 in

Product Description

The SPI 29-608-7 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a tolerance of 0.0002 inches. It is a go/no-go style inspection tool machined from steel and sized at 0.608 inches in diameter. Plug gages of this class are standard tooling in precision machining, quality control, and manufacturing environments where dimensional accuracy must be confirmed before a part moves to the next stage of production. The Class ZZ designation reflects a defined ANSI tolerance grade appropriate for general inspection use. Weight is 0.2 pounds.

This plug gage is suited for incoming and in-process inspection of drilled, reamed, or bored holes measuring 0.608 inches in diameter. It is used in machine shops, fabrication facilities, and quality assurance labs by machinists, QC inspectors, and tool-and-die professionals. The steel construction provides durability through repeated use in production environments.

Key Features

• Nominal diameter of 0.608 inches for precise bore inspection
• Class ZZ Plus tolerance grade at 0.0002 inches per ANSI standards
• Steel construction for wear resistance and dimensional stability
• Lightweight at 0.2 pounds for easy hand use during inspection
• Single-piece plug design for straightforward go/no-go verification

Compatibility

Designed as an OEM-style inspection gage for any application requiring bore verification at 0.608 inches nominal diameter within the Class ZZ Plus tolerance specification.

Installation Notes

Plug gages are handled and used by QC inspectors and machinists and require no power or installation. Ensure the bore and gage surfaces are clean and free of chips, coolant, or debris before gauging to avoid false readings or gage wear. Do not force the gage into an undersize bore. Store the gage in a protective case away from other tooling to prevent surface damage that would affect accuracy.