Vermont Gage 112312590 Class Zz Plus Plug Gage 12.59 Mm

Product Description

The VERMONT GAGE 112312590 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of bored, drilled, and reamed holes. It measures 12.59 mm in diameter with a tolerance of 0.00508 mm, making it suitable for verifying hole size against tight engineering tolerances. The gage has an overall length of 2.0000 inches and weighs 0.11 pounds. A Certificate of Accuracy with NIST traceability is included, supporting quality-system documentation requirements. The surface finish is held to 10 microfinish. Machinists, quality technicians, and dimensional inspectors use this tool in production and incoming inspection environments.

This plug gage is used for go inspection of workpiece features at 12.59 mm nominal diameter. It is compatible with standard gage handle systems and is suited for use alongside micrometers, verniers, and other measuring devices as described in the application data. Typical applications include inspection of machined components in manufacturing, tool and die, and precision fabrication settings. The Class ZZ Plus classification indicates it meets the tighter accuracy tier within the ZZ class range per ASME B89.1.

Key Features

• 12.59 mm nominal diameter with 0.00508 mm tolerance for precise go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface coating for accurate contact with bore surfaces
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Conforms to ASME B89.1 standards
• Overall length of 2.0000 inches fits standard gage handle systems

Compatibility

Designed for use in go inspection applications alongside micrometers, verniers, and other measuring devices. Fits standard plug gage handle systems accepting the 12.59 mm diameter class.

Installation Notes

Plug gages are handled and used by quality technicians and machinists in inspection settings. Clean and deburr the workpiece bore before gaging to avoid false readings or damage to the gage surface. Store the gage in its protective case when not in use and avoid contact with abrasive surfaces. Calibration intervals should follow your facility quality plan in accordance with ASME B89.1 guidance.