Vermont Gage 111140100 Class Zz Plus Plug Gage 0.401 in

Product Description

The VERMONT GAGE 111140100 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored, drilled, and reamed holes. It measures a nominal diameter of 0.401 inches with a tolerance of 0.0002 inches, making it suitable for go inspection applications where tight dimensional control is required. Constructed from tool steel and finished to a 10 microfinish surface quality, this gage delivers consistent, repeatable results. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements in manufacturing and calibration environments. Machinists, quality technicians, and metrology professionals are the primary users of this type of instrument.

This plug gage is used in production inspection, incoming quality control, and calibration workflows across machine shops, manufacturing facilities, and metrology labs. Its 0.401-inch diameter and Class ZZ Plus tolerance classification make it appropriate for go inspection of precision-machined bores. It is also suited for setting and verifying the accuracy of micrometers, verniers, and other measuring devices where a certified reference standard is required. Typical applications span both light manufacturing and high-precision production environments where ASME B89.1 compliance is specified.

Key Features

• 0.401-inch nominal diameter with 0.0002-inch tolerance for tight dimensional control
• Class ZZ Plus classification per ASME B89.1 standard
• Tool steel construction for durability and wear resistance in production use
• 10 microfinish surface provides consistent, low-friction gaging contact
• Includes Certificate of Accuracy with NIST traceability for documentation and audit support
• Suitable for go inspection and use as a reference standard for measuring instruments

Compatibility

Designed for go inspection of precision-machined bores at 0.401 inches nominal diameter, and for use as a setting standard with micrometers, verniers, and other measuring devices requiring a certified reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or utility shutoff is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into an undersized bore, as this will damage both the gage and the workpiece. Store in the provided case or a protected location away from abrasive materials and temperature extremes that could affect calibration.