Vermont Gage 112220660 Class Zz Minus Plug Pin Gage 20.66mm

Product Description

The VERMONT GAGE 112220660 is a Class ZZ Minus plug pin gage machined from steel and used to verify bore diameters in precision inspection work. It measures 20.66 mm in diameter with a tolerance of 0.00508 mm, making it suited for NoGo inspection applications where tight dimensional control is required. Overall length is 2 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming the gage meets Class ZZ dimensional standards. Machinists, quality technicians, and tool room inspectors use this type of gage as part of go/nogo inspection routines for hole and bore verification.

This pin gage is designed for use in NoGo inspection roles and is also compatible with setting and verifying micrometers, verniers, and other precision measuring devices. It fits into standard gage handle systems and is well suited for shop-floor inspection, incoming inspection, and in-process quality checks in manufacturing environments. Single-piece packaging makes it straightforward to add to an existing gage set or replace a worn pin in a current kit.

Key Features

• Class ZZ Minus tolerance classification for NoGo inspection use
• 20.66 mm measurement diameter with 0.00508 mm tolerance
• Steel construction for durability and dimensional stability
• 10 Micro coating/finish for corrosion resistance and smooth surface
• Includes Certificate of Accuracy with NIST traceability
• 2-inch overall length fits standard gage handles

Compatibility

Designed for use in NoGo inspection applications and for setting micrometers, verniers, and other precision measuring devices requiring a 20.66 mm reference diameter.

Installation Notes

Pin gages are typically handled and used by quality technicians or tool room personnel following standard metrology practices. Handle the gage with clean cotton gloves or a clean dry cloth to prevent oils from affecting surface finish and measurement accuracy. Store the gage in its protective case when not in use to avoid nicks, burrs, or corrosion that would invalidate its calibration. Do not force the pin into a bore; light, controlled insertion is standard practice to protect both the gage and the workpiece.