Vermont Gage 112105500 Class Zz Plus Plug Gage 5.5 Mm

Product Description

The VERMONT GAGE 112105500 is a Class ZZ Plus plug gage designed for precise go inspection of bored, drilled, and reamed holes. It measures 5.5 mm in diameter with a tolerance of 0.00508 mm, making it suitable for high-accuracy dimensional verification in manufacturing and quality-control environments. Constructed from tool steel with a 10 microfinish surface coating, this gage delivers consistent, repeatable results. A Certificate of Accuracy with NIST traceability is included, supporting documented quality systems and shop-floor inspection protocols. Machinists, metrology technicians, and quality inspectors rely on this type of gage for go-side verification checks.

This plug gage is used in applications requiring close-tolerance hole inspection, including setting micrometers, verniers, and other measuring devices to a known reference diameter. It is well suited for job shops, production facilities, and inspection labs where ASME B89.1 compliance is required. The compact overall length of 2.0 inches makes it easy to handle for bench-top and in-process inspection tasks. The gage ships individually packaged with its accompanying certificate.

Key Features

• Class ZZ Plus tolerance grade with 0.00508 mm tolerance for precise go inspection
• 5.5 mm diameter ground to 10 microfinish surface quality
• Tool steel construction for durability and wear resistance
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 standards
• Compact 2.0-inch overall length for easy bench or in-process use

Compatibility

Designed for go inspection of 5.5 mm diameter holes and for setting micrometers, verniers, and other measuring devices requiring a calibrated plug reference.

Installation Notes

Plug gages of this type are handled by metrology technicians and quality inspectors rather than installed in a mechanical system. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into an undersized hole, as this can damage both the gage and the workpiece. Store in its protective case and re-certify on a schedule consistent with your facility quality program.