Vermont Gage 112220860 Class Zz Minus Plug Pin Gage 20.86mm

Product Description

The VERMONT GAGE 112220860 is a Class ZZ Minus plug pin gage machined from steel and used to perform NoGo inspection checks on bored holes, machined bores, and precision-fit features. The gage measures a nominal diameter of 20.86 mm with a tolerance of 0.00508 mm, making it suitable for verifying that a hole does not exceed its maximum allowable material condition. Overall length is 2 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO-compliant inspection environments. Machinists, quality technicians, and tool-and-die professionals rely on this type of gage for fast, repeatable attribute inspection without the setup time of a comparator.

Class ZZ Minus plug gages are used in production and inspection environments where holes must be confirmed to a tight dimensional window. This gage is appropriate for use alongside set micrometers, verniers, and other calibrated measuring devices. Typical applications include final inspection of machined components, incoming material verification, and process control checks on CNC-bored features. Its steel construction and 10 micro finish support consistent seating in the bore and reduce the risk of false readings caused by surface irregularities.

Key Features

• 20.86 mm nominal measurement diameter for NoGo attribute inspection
• Class ZZ Minus tolerance of 0.00508 mm for tight dimensional control
• 2-inch overall length for comfortable one-hand use at the inspection bench
• Steel construction with 10 micro surface finish for repeatable bore seating
• Includes Certificate of Accuracy with NIST traceability for calibration records
• Compatible with set micrometers, verniers, and standard measuring device workflows

Compatibility

Designed for use with set micrometers, verniers, and other calibrated measuring devices in NoGo inspection applications requiring a 20.86 mm nominal bore diameter.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists in inspection or production environments. Clean the gage and the bore thoroughly before use to prevent debris from causing inaccurate readings or bore damage. Store the gage in its case when not in use to protect the ground surface and maintain calibration integrity. Periodic recalibration against NIST-traceable standards is recommended per your facility quality plan.