Vermont Gage 112306350 Class Zz Plus Plug Gage 6.35mm

Product Description

The VERMONT GAGE 112306350 is a Class ZZ Plus plug gage designed for precision bore and hole inspection in toolroom and quality-control environments. Manufactured from tool steel with a 10 microfinish surface coating, it holds a diameter of 6.35 mm with a tolerance of 0.005 mm. The gage ships with a Certificate of Accuracy that carries NIST traceability, satisfying documentation requirements for ISO-compliant inspection programs. Machinists, quality technicians, and metrologists use this type of gage to verify that drilled, reamed, or bored features meet dimensional acceptance criteria before parts move to the next stage of production.

This plug gage is suited for Go inspection applications and can also be used to calibrate or verify the accuracy of micrometers, verniers, and other measuring devices on the shop floor. At 2.0 inches overall length and 0.03 pounds, it handles easily for single-operator inspection routines. The 6.35 mm diameter range makes it a common fit in light manufacturing, aerospace, medical device, and precision mechanical assembly environments where tight hole tolerances are routine.

Key Features

• Class ZZ Plus tolerance grade per ASME B89.1 for reliable Go inspection
• 6.35 mm diameter with 0.005 mm tolerance for tight-tolerance bore verification
• Tool steel construction for wear resistance in repetitive inspection use
• 10 microfinish surface coating minimizes gage wear and protects hole surfaces
• Includes Certificate of Accuracy with NIST traceability for documentation and audit compliance
• Compact 2.0-inch overall length suits benchtop and in-process inspection workflows

Compatibility

Designed for Go inspection of 6.35 mm diameter bores and as a reference standard for setting micrometers, verniers, and other measuring devices. Conforms to ASME B89.1 standards for plain plug gages.

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 body. Do not force the gage into an undersized bore, as this will damage both the gage and the workpiece surface. Store in the provided case or a protected location away from temperature extremes to maintain dimensional stability.