Vermont Gage 112308590 Class Zz Plus Plug Gage 8.59 Mm

Product Description

The VERMONT GAGE 112308590 is a Class ZZ Plus cylindrical plug gage used to verify bore and hole diameters to tight dimensional tolerances. It measures 8.59 mm in diameter with a tolerance of 0.00508 mm, making it suitable for high-precision Go inspection work. Manufactured from tool steel with a 10 microfinish surface coating, this plug gage delivers consistent, repeatable results in production and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Machinists, quality technicians, and metrology professionals use this gage to confirm that bored, drilled, or reamed features fall within specified limits.

This plug gage is used in applications where precise hole acceptance inspection is required, including production floor go/no-go checks and calibration setups. It is also suited for setting and verifying micrometers, verniers, and other dimensional measuring devices. The 8.59 mm diameter makes it appropriate for small-bore inspection tasks in precision machining, toolroom, and manufacturing quality-assurance workflows. The overall length of 2.0 inches allows for easy handling in standard gage handle assemblies.

Key Features

• Class ZZ Plus tolerance of 0.00508 mm for high-precision Go inspection
• Tool steel construction for hardness and wear resistance
• 10 microfinish surface coating for smooth, accurate contact
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability
• Overall length of 2.0 inches fits standard gage handle assemblies

Compatibility

Designed for use as a Go inspection plug gage and for setting micrometers, verniers, and other dimensional measuring devices requiring an 8.59 mm reference diameter.

Installation Notes

Plug gages of this type are handled and used by quality technicians and machinists in controlled inspection environments. Clean the gage and the bore being inspected before use to prevent debris from affecting measurement accuracy. Do not force the gage into an undersized bore, as this can damage the gage surface finish and affect calibration. Store the gage in its protective case when not in use to prevent corrosion and surface damage.