Vermont Gage 112305090 Class Zz Plus Plug Gage 5.09mm

Product Description

The VERMONT GAGE 112305090 is a Class ZZ Plus plug gage with a 5.09 mm diameter, designed for dimensional inspection of machined holes and bores. Manufactured from tool steel with a 10 microfinish surface, this gage delivers the precision required for Go inspection applications. The tolerance is 0.00508 mm, conforming to ASME B89.1 standards. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented quality control environments. Machinists, quality technicians, and tool room personnel use this gage to verify that a drilled, reamed, or bored hole meets its lower tolerance limit.

This plug gage is used in production inspection, incoming quality inspection, and setup verification on machine tools. It is appropriate for checking hole acceptance on both light-duty and precision machined components in manufacturing and fabrication environments. Compatible applications include setting micrometers, verniers, and other measuring devices in addition to standard Go inspection of workpiece bores. Its compact overall length of 2.0000 inches makes it easy to handle in bench and floor inspection settings.

Key Features

• 5.09 mm diameter with 0.00508 mm tolerance per ASME B89.1
• Class ZZ Plus classification for Go inspection applications
• 10 microfinish surface for accurate, repeatable contact
• Tool steel construction for wear resistance and dimensional stability
• Includes Certificate of Accuracy with NIST traceability
• Can also be used to set micrometers, verniers, and other measuring devices

Compatibility

Designed for Go inspection of machined holes at the 5.09 mm nominal diameter, and for use as a reference standard when setting micrometers, verniers, and other precision measuring devices.

Installation Notes

Plug gages are handled by quality technicians and tool room personnel - no installation trade license is required, but proper metrology practice applies. Store the gage in its protective case when not in use to prevent corrosion and surface damage. Clean the gage and the workpiece bore before each measurement to avoid false readings from chips or debris. Do not force the gage into an undersized hole, as this will damage the gage surface and invalidate its calibration.