Vermont Gage 111339050 Class Zz Plus Plug Gage 0.3905 in

Product Description

The VERMONT GAGE 111339050 is a Class ZZ Plus plug gage machined from tool steel for dimensional inspection of bored holes, machined bores, and precision-fit features. It measures 0.3905 inches in diameter with a tolerance of 0.0002 inches and carries a 10 microfinish surface finish, making it suitable for go-gauge inspection tasks that demand close dimensional control. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming compliance with ASME B89.1 standards. Machinists, quality technicians, and tool-and-die professionals use plug gages of this class to verify whether a hole is within specification before assembly or final inspection.

This gage is designed for go inspection applications on production floors, inspection rooms, and job-shop environments where repeatable, traceable measurement is required. It is also appropriate for setting and verifying micrometers, verniers, and other measuring devices that require a known reference standard. The 2.0-inch overall length provides a practical handling length for one-handed use during routine inspection cycles. Class ZZ Plus tolerance class suits general-purpose inspection work where gauge-block-level precision is not required but controlled dimensional accuracy is still critical.

Key Features

• 0.3905-inch measurement diameter with 0.0002-inch tolerance for precise go-inspection work
• 10 microfinish surface for smooth, repeatable contact with inspected bores
• Tool steel construction for wear resistance and dimensional stability
• 2.0-inch overall length for comfortable single-hand use during inspection
• Includes Certificate of Accuracy with NIST traceability
• Meets ASME B89.1 dimensional gage standards

Compatibility

Designed for use as a go plug gage for inspecting bored holes and machined features at 0.3905 inches diameter; also suitable for setting micrometers, verniers, and other measuring devices requiring a certified dimensional reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists and require no permanent installation. Keep the gage clean and lightly oiled when not in use to prevent corrosion of the tool steel body. Never force the gage into an undersized bore, as this can damage both the gage and the workpiece. Store in a protective case away from abrasive materials to preserve the 10 microfinish surface integrity.