Vermont Gage 112105280 Class Zz Plus Plug Gage 5.28mm

Product Description

The VERMONT GAGE 112105280 is a Class ZZ Plus plug gage designed for precision bore inspection in tool rooms, quality labs, and production environments. It measures 5.28 mm in diameter with a tolerance of 0.005 mm and features a 10 microfinish surface finish on the gage member. This plug gage is used as a Go-type inspection tool to verify that a drilled, bored, or reamed hole meets minimum acceptable size requirements. Manufactured from tool steel, it delivers the hardness and wear resistance required for repeated gauging cycles. Each unit ships with a Certificate of Accuracy traceable to NIST standards, confirming dimensional compliance at the time of manufacture.

This plug gage is suited for use in Go inspection applications where tight hole tolerances must be verified quickly and reliably. It is also compatible with setup and verification tasks involving set micrometers, verniers, and other precision measuring devices. Typical installation environments include machine shops, quality control departments, and manufacturing facilities producing components with close-tolerance bored or reamed holes. The 2.0-inch overall length provides adequate reach for most standard inspection scenarios in both prototype and production settings.

Key Features

• Class ZZ Plus tolerance classification for Go inspection of 5.28 mm diameter holes
• 0.005 mm tolerance for precise dimensional verification
• 10 microfinish surface on the gage member for consistent, repeatable contact
• Tool steel construction for hardness and long service life
• Includes Certificate of Accuracy with NIST traceability per ASME B89.1
• Compatible with set micrometers, verniers, and other measuring devices

Compatibility

Designed for Go inspection of 5.28 mm diameter bored, drilled, or reamed holes. Also suitable for setting and verifying micrometers, verniers, and other precision measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages of this type are handled and used by quality technicians, machinists, and metrologists. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Never force the gage member into a bore; Go members should pass under the weight of the gage alone or with minimal hand pressure. Store in the provided case away from other metal tools to protect the finished surface and maintain calibration integrity.