Vermont Gage 111303150 Class Zz Plus Plug Gage 0.0315 in

Product Description

The VERMONT GAGE 111303150 is a Class ZZ Plus plug gage designed for precise go-inspection of small-diameter bores and holes. Built from tool steel with a 10 microfinish surface, it measures a nominal diameter of 0.0315 inches and holds a tolerance of 0.0002 inches. A Certificate of Accuracy with NIST traceability is included, confirming the gage meets ASME B89.1 standards. Machinists, quality control technicians, and dimensional inspection professionals use this type of gage to verify that a drilled, reamed, or machined hole falls within a specified minimum acceptable size. The overall length is 2.0 inches, making it suitable for bench use and easy handling in production environments.

This plug gage is used in manufacturing and machine shop environments where tight bore tolerances must be verified before parts move to the next stage of production. It is suited for go inspection of holes in metal and engineered components. It can also be used as a reference standard when setting micrometers, verniers, and other measuring devices. The 0.0315-inch diameter makes it appropriate for very small-bore applications common in precision machining, instrument manufacturing, and close-tolerance assembly work.

Key Features

• Class ZZ Plus tolerance class for go-inspection of small-diameter bores
• Nominal diameter of 0.0315 inches with a tolerance of 0.0002 inches
• 10 microfinish surface for consistent, repeatable contact with bore surfaces
• Tool steel construction for durability and dimensional stability
• Meets ASME B89.1 standards for dimensional gaging
• Includes Certificate of Accuracy with NIST traceability

Compatibility

Designed for go inspection of bores and holes nominally 0.0315 inches in diameter. Also suitable for use as a setting reference with micrometers, verniers, and other measuring devices per the manufacturer application guidance.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists; no power source is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain dimensional integrity. Do not force the gage into an undersized hole, as this can damage the gage surface and compromise accuracy. Store in the protective case or sleeve when not in use to protect the finished surface.