Vermont Gage 112108020 Class Zz Plus Plug Gage 8.02mm

Product Description

The VERMONT GAGE 112108020 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of bored, drilled, and reamed holes. It checks whether a hole meets its minimum acceptable size, making it a standard tool in quality control workflows on the shop floor or in the inspection lab. The gage measures 8.02 mm in diameter with a tolerance of 0.005 mm, providing the precise dimensional control that Class ZZ Plus classification requires. The working surface carries a 10 microfinish, reducing friction and wear during repeated insertions. Overall length is 2.0 inches.

This plug gage is suited for use in manufacturing inspection, tool and die operations, and machine shops where hole diameter verification is part of the quality process. It is equally appropriate for setting and verifying micrometers, verniers, and other measuring devices. Machinists, quality technicians, and metrology professionals working to ASME B89.1 standards will find this gage a direct fit for go-type attribute inspection tasks in both production and job-shop environments.

Key Features

• Class ZZ Plus tolerance of 0.005 mm for precise go inspection
• 8.02 mm diameter in tool steel construction for durability and wear resistance
• 10 microfinish on the gage surface for smooth, consistent insertion
• Conforms to ASME B89.1 dimensional standards
• Includes a Certificate of Accuracy with NIST traceability
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go-type attribute inspection of holes at 8.02 mm nominal diameter. Also used to set and verify micrometers, verniers, and comparable measuring instruments where a traceable reference diameter is required.

Installation Notes

Handle plug gages with clean, dry hands or lint-free gloves to prevent contamination of the precision surface. Apply a light film of clean instrument oil before use and wipe clean after each inspection session to prevent corrosion on the tool steel. Do not force the gage into a hole; if resistance is felt beyond light hand pressure, the feature is undersize. Store the gage in its protective case away from other metal tools to avoid nicks or surface damage.