Vermont Gage 112304330 Class Zz Plus Plug Gage 4.33mm

Product Description

The VERMONT GAGE 112304330 is a Class ZZ Plus plug gage machined from tool steel for dimensional inspection of bored holes and internal features. It measures 4.33 mm in diameter with a tolerance of 0.00508 mm, providing the tight dimensional control required for Go inspection applications. The overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy that carries NIST traceability, satisfying documentation requirements in quality-controlled manufacturing and metrology environments. Machinists, quality technicians, and tool-and-die professionals use this gage to verify that a hole has been produced within its minimum acceptable dimension before a part moves to the next stage of production.

This plug gage is suited for Go inspection in production and inspection settings where tight bore tolerances must be confirmed quickly and reliably. It is also applicable for setting and verifying micrometers, verniers, and other measuring devices. The 10 microfinish surface finish minimizes wear on the gage and the workpiece during repeated insertions, making it appropriate for both low-volume precision work and higher-throughput inspection lines in machine shops, fabrication facilities, and quality labs.

Key Features

• Class ZZ Plus tolerance classification for Go inspection per ASME B89.1
• 4.33 mm diameter with 0.00508 mm tolerance for precise bore verification
• Tool steel construction for durability and dimensional stability
• 10 microfinish surface finish reduces wear during repeated use
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Overall length of 2.0000 inches suits standard hand-held inspection technique

Compatibility

Designed for Go inspection of internal bores and for setting micrometers, verniers, and other measuring devices requiring a 4.33 mm reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists following standard metrology practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain dimensional accuracy. Do not force the gage into a bore; Go gages should pass under their own weight or with minimal hand pressure. Store in the original case or a protected holder to prevent contact damage to the precision-ground surface.