Vermont Gage 112300490 Class Zz Plus Plug Gage 0.49mm

Product Description

The VERMONT GAGE 112300490 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore and hole diameters to tight dimensional tolerances. It measures a nominal diameter of 0.49 mm with a tolerance of 0.00508 mm, providing reliable go-inspection results at the lower end of the small-bore range. The gage carries a 10 microfinish surface rating and ships with a Certificate of Accuracy traceable to NIST. Dimensional inspection technicians, tool-and-die machinists, and quality control personnel use this gage to validate part conformance on the shop floor or in the metrology lab.

This plug gage is suited for go inspection applications in manufacturing environments where small-bore precision is critical. It is also compatible with setup and calibration routines for micrometers, verniers, and other measuring devices requiring a traceable reference standard. The 2.0-inch overall length fits standard pin gage handles and friction-drive holders. Its compact size and tool steel construction make it appropriate for both high-volume production inspection and low-volume precision machining operations.

Key Features

• Class ZZ Plus tolerance class for go-inspection of small-diameter bores
• 0.49 mm nominal diameter with 0.00508 mm tolerance for precise dimensional verification
• 10 microfinish surface rating reduces wear and ensures accurate contact measurement
• Tool steel construction for durability under repeated use
• Includes Certificate of Accuracy with NIST traceability, meeting ASME B89.1 standards
• 2.0-inch overall length compatible with standard pin gage handles and holders

Compatibility

Designed for use in go inspection of small-diameter bores and as a reference standard for setting micrometers, verniers, and other measuring devices. Conforms to ASME B89.1.

Installation Notes

Plug gages are handled and used by dimensional inspection technicians and quality control personnel. Clean the gage and the workpiece bore before use to prevent debris from affecting the measurement reading. Store the gage in its protective case when not in use to avoid surface damage. Follow ASME B89.1 handling guidelines to maintain traceability and avoid compromising the calibrated tolerance.