Vermont Gage 112403210 Class Zz Minus Plug Pin Gage 3.21mm

Product Description

The VERMONT GAGE 112403210 is a Class ZZ minus plug pin gage machined from steel and used for precision dimensional inspection in manufacturing and metrology environments. The gage measures a nominal diameter of 3.21 mm with a tolerance of 0.00508 mm, delivering the close-tolerance accuracy required for NoGo inspection work. At 2 inches in overall length, it is sized for practical use in hand gaging applications. Each unit ships with a Certificate of Accuracy traceable to NIST standards, confirming that the gage meets documented Class ZZ minus specifications. Machinists, quality technicians, and metrologists rely on this type of gage for fast, reliable attribute inspection on production floors and in inspection labs.

This plug pin gage is intended for NoGo inspection applications, including checking bores, holes, and features that must not exceed a specified size limit. It is also suited for setting and verifying micrometers, verniers, and other measuring devices that require a known reference. Typical users include quality control technicians and precision machinists working in industries where dimensional verification to tight tolerances is required. The 3.21 mm diameter positions this gage for small-bore inspection work common in precision component manufacturing.

Key Features

• Class ZZ minus tolerance of 0.00508 mm for precision NoGo attribute inspection
• 3.21 mm nominal measurement diameter in a compact 2-inch overall length
• Steel construction with a 10 microfinish surface coating for consistent gage contact
• Includes Certificate of Accuracy with NIST traceability for documented calibration records
• Suitable for setting micrometers, verniers, and other reference-dependent measuring devices

Compatibility

Designed as an OEM-style Class ZZ minus plug pin gage for use in standard hand gaging setups requiring a 3.21 mm NoGo reference diameter.

Installation Notes

Handle pin gages with clean, dry hands or lint-free gloves to prevent contamination of the precision-finished surface. Store the gage in its protective case when not in use to avoid nicks, corrosion, or damage that would affect measurement accuracy. Calibration intervals should follow your facility quality management plan, referencing the included NIST-traceable Certificate of Accuracy as the baseline. Do not force the gage into a feature; proper NoGo inspection relies on hand feel and gravity insertion only.