Vermont Gage 111339450 Class Zz Plus Plug Gage 0.3945 in

Product Description

The VERMONT GAGE 111339450 is a Class ZZ Plus plug gage designed for precise dimensional inspection of machined bores and holes. The gage measures a nominal diameter of 0.3945 inches with a tolerance of 0.0002 inches, making it suitable for high-accuracy go-inspection applications. Manufactured from tool steel, it features a 10 microfinish surface that supports consistent, repeatable contact with workpiece surfaces. Each unit ships with a Certificate of Accuracy with NIST Traceability, confirming it meets ASME B89.1 standards. Machinists, quality technicians, and tool room personnel use this gage in production and inspection environments.

This plug gage is used in go inspection applications to verify that bored or reamed holes fall within the specified tolerance for minimum material condition. It is also suitable for setting micrometers, verniers, and other comparative measuring devices to a known reference diameter. Typical applications include machining shops, toolrooms, and quality control stations working with close-tolerance parts in both job shop and production environments.

Key Features

• Class ZZ Plus tolerance grade for go inspection of machined holes and bores
• 0.3945 inch nominal diameter with 0.0002 inch tolerance
• 10 microfinish surface for accurate and repeatable contact
• Tool steel construction for durability in shop environments
• Includes Certificate of Accuracy with NIST Traceability
• Conforms to ASME B89.1 dimensional standards

Compatibility

Designed as a go inspection plug gage for use with machined bores and holes at 0.3945 inch nominal diameter. Also suitable for setting micrometers, verniers, and other measuring devices requiring a traceable reference standard at this diameter.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no permanent installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surfaces. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece. Store in a protective case away from temperature extremes to maintain dimensional accuracy.