Vermont Gage 112220280 Class Zz Minus Plug Pin Gage 20.28mm

Product Description

The VERMONT GAGE 112220280 is a Class ZZ minus plug pin gage designed to measure a nominal diameter of 20.28 mm with a tolerance of 0.00508 mm. This steel pin gage is used during NoGo inspection to verify that a hole or bore does not exceed its maximum allowable size. The 0.00508 mm tolerance rating places it within the Class ZZ specification, which is standard for workshop-level attribute gauging. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for quality control environments that require documented traceability. The overall length is 2 inches. Machinists, quality technicians, and metrology professionals are the primary users of this tool.

This pin gage is used in manufacturing and machining environments where bore and hole acceptance criteria must be verified through attribute inspection. The NoGo application means the gage is used to confirm rejection of oversized features. It is also compatible with setup and verification tasks involving set micrometers, verniers, and other measuring devices where a known reference diameter is required. Suitable for both production floor inspection and toolroom use, this gage fits into standard pin gage sets or can be used as a standalone reference tool.

Key Features

• Class ZZ minus tolerance of 0.00508 mm for workshop-grade attribute inspection
• Nominal measurement diameter of 20.28 mm
• Steel construction for durability and dimensional stability
• 10 micro coating finish to resist wear and corrosion
• Includes Certificate of Accuracy with NIST traceability
• Overall length of 2 inches for standard handle compatibility

Compatibility

Designed for use in NoGo inspection applications and as a reference standard with set micrometers, verniers, and other measuring devices requiring a calibrated diameter reference.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent contamination of the gage surface. Store the gage in its protective case when not in use to prevent damage to the precision-ground surface. Before use, verify the gage surface is free of burrs, debris, or corrosion that could affect measurement accuracy. Gages should be re-calibrated periodically per your facility quality management system requirements.