Vermont Gage 112300630 Class Zz Plus Plug Gage 0.63 Mm

Product Description

The VERMONT GAGE 112300630 is a Class ZZ Plus plug gage designed for precision dimensional inspection of small bores and holes. Machined from tool steel with a 10 microfinish surface coating, this gage checks whether a feature falls within acceptable tolerance limits during Go inspection routines. The diameter measures 0.63 mm with a tolerance of 0.00508 mm, making it suitable for tight-tolerance work in manufacturing and metrology environments. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documentation requirements in quality management systems. Licensed metrologists, machinists, and quality control technicians are the primary users.

This plug gage is used in production inspection, incoming inspection, and calibration lab settings where small-bore Go verification is required. Typical applications include verifying hole diameters on precision-machined components before assembly. It is also used to set and verify micrometers, verniers, and other measuring devices per the application guidance specified for this gage. The overall length of 2.0 inches provides adequate grip and handling for bench use or integration into a gage stand setup.

Key Features

• Class ZZ Plus tolerance grade for Go inspection per ASME B89.1
• 0.63 mm diameter with 0.00508 mm tolerance for tight-tolerance bore verification
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface coating for accurate, repeatable contact
• Includes Certificate of Accuracy with NIST traceability
• Compatible with micrometers, verniers, and other measuring devices as a reference standard

Compatibility

Suitable for Go inspection use and for setting micrometers, verniers, and other measuring devices. Conforms to ASME B89.1 standards for plug gages.

Installation Notes

Plug gages should be handled by trained metrology or quality control personnel. Clean the gage and the workpiece bore before use to prevent debris from affecting readings or causing premature wear. Store the gage in its protective case when not in use to maintain surface finish and dimensional integrity. Avoid dropping or applying side loads, as this can alter the gage diameter and invalidate NIST traceability.