Vermont Gage 112108540 Class Zz Plus Plug Gage 8.54mm

Product Description

The VERMONT GAGE 112108540 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes and machined features. This go-type gage checks that a hole or bore meets the minimum allowable size before a part moves to the next stage of production or assembly. Built from tool steel with a 10 microfinish surface coating, the 112108540 holds a tolerance of 0.005 mm, making it suitable for moderate-precision inspection work. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality-system documentation requirements under ASME B89.1. Overall length is 2.0000 inches and the gage diameter is 8.54 mm.

This plug gage is used in machine shops, manufacturing facilities, and maintenance environments where hole diameter verification is required. Typical applications include go inspection on drilled, reamed, or bored features prior to assembly. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a known reference diameter. The gage suits both production-line inspection and toolroom calibration tasks where a Class ZZ Plus tolerance class meets the required inspection grade.

Key Features

• Class ZZ Plus tolerance class with 0.005 mm tolerance for reliable go inspection
• Tool steel construction for durability in regular shop use
• 10 microfinish surface coating for consistent gage contact and reduced wear
• Includes Certificate of Accuracy with NIST traceability for QMS documentation
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0000-inch overall length for easy handling in confined inspection setups

Compatibility

Designed for go inspection of features at 8.54 mm nominal diameter. Also suitable for setting micrometers, verniers, and other measuring devices requiring a calibrated reference plug at this diameter.

Installation Notes

Plug gages are handled and used by machinists, quality technicians, and tool-room personnel. Store the gage in its protective case when not in use to prevent surface damage that could affect accuracy. Apply a light coat of instrument oil before storage to prevent corrosion on the tool steel body. Never force the gage into a feature; if resistance is felt during go inspection, the hole is undersized and should not be passed.