Spi 19-707-9 Class Zz Minus Plug Pin Gage 0.707 in

Product Description

The SPI 19-707-9 is a Class ZZ minus plug pin gage manufactured from steel, designed to verify the dimensional accuracy of holes and bores in precision machining and inspection applications. With a nominal diameter of 0.707 inches and a tolerance of 0.0002 inches, this gage provides reliable go/no-go measurement confirmation for quality control workflows. Class ZZ is the standard tolerance grade for general-purpose inspection gages used in production environments. Machinists, toolroom technicians, and quality control inspectors use pin gages like this one to check hole size, straightness, and fit during part verification.

This plug pin gage is suited for use in machine shops, fabrication facilities, and inspection departments where consistent hole-size verification is required. It is appropriate for checking bored, drilled, or reamed holes in metal components where dimensional tolerance must be confirmed before assembly. The minus designation indicates the gage is ground to the lower boundary of the nominal diameter, ensuring the part will accept the gage when the hole meets minimum acceptable size.

Key Features

• Class ZZ tolerance grade for general-purpose production inspection
• Minus configuration ground to the lower tolerance boundary of the nominal diameter
• 0.707 inch nominal diameter with 0.0002 inch tolerance
• Steel construction for durability in shop environments
• Single-piece package suitable for individual gage set builds or direct replacement

Compatibility

Designed as a standard Class ZZ minus plug pin gage suitable for use with conventional pin gage handles and holders accepting 0.707 inch diameter gage pins in general-purpose dimensional inspection setups.

Installation Notes

Pin gages are used by quality control technicians and machinists and require no permanent installation. Handle the gage pin carefully to avoid surface damage that could affect measurement accuracy. Clean the gage and the hole to be measured before use to prevent debris from affecting readings. Store the pin gage in a protective case or roll when not in use to prevent nicks and corrosion.