Vermont Gage 112111580 Class Zz Plus Plug Gage 11.58mm

Product Description

The VERMONT GAGE 112111580 is a Class ZZ Plus plug gage designed for go inspection of bored, drilled, or reamed holes. It measures 11.58 mm in diameter and holds a tolerance of 0.00508 mm, making it suitable for precision dimensional verification in production and quality control environments. The gage features a 10 microfinish surface, which reduces wear on the part being inspected and helps maintain measurement integrity over repeated use. Machinists, quality technicians, and metrology professionals use this tool to verify that hole diameters fall within specified tolerances. Each unit ships with a Certificate of Accuracy that includes NIST traceability, supporting calibration records and inspection documentation requirements.

This plug gage is used in machine shops, manufacturing facilities, and quality labs for go inspection of precision holes. It is compatible with go-nogo inspection routines and serves as a reference standard when setting micrometers, verniers, and other measuring devices to a known diameter. The 11.58 mm size fits applications where metric hole tolerances must be confirmed to tight standards, such as bearing seats, bushings, and precision-fit bores in mechanical assemblies. Its compact overall length of 2.0000 inches allows use in shallow or restricted-access holes.

Key Features

• Class ZZ Plus tolerance grade: 0.00508 mm, suitable for go inspection in production environments
• 10 microfinish surface reduces galling and extends service life of both gage and workpiece
• Tool steel construction provides hardness and dimensional stability under repeated use
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Conforms to ASME B89.1 standard for dimensional gaging
• Overall length of 2.0000 inches suits shallow-bore and restricted-access inspection

Compatibility

Designed for use as a go inspection gage and as a setting standard for micrometers, verniers, and other measuring devices requiring a known 11.58 mm diameter reference.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, verify the workpiece is at or near the standard reference temperature of 68 degrees F (20 degrees C) to avoid thermal expansion errors. Do not force the gage into an undersized hole, as this can damage both the gage and the part. Store the gage in its protective case when not in use and recalibrate periodically per your facility quality plan and applicable ASME B89.1 requirements.