Vermont Gage 112221720 Class Zz Minus Plug Pin Gage 21.72mm

Product Description

The VERMONT GAGE 112221720 is a Class ZZ Minus plug pin gage designed for precise dimensional inspection of bored holes, machined bores, and other cylindrical features. Built from steel with a 10 micro finish coating, this pin gage measures a nominal diameter of 21.72 mm with a tolerance of 0.00508 mm. It is used in NoGo inspection applications to verify that a hole or feature does not exceed its maximum allowable size. Each unit ships with a Certificate of Accuracy with NIST Traceability, making it suitable for use in calibrated inspection environments. Machinists, quality control technicians, and tool-and-die professionals are the primary installers and users of this gage.

This pin gage is suited for use in machine shops, production floor inspection stations, and metrology labs handling close-tolerance work. Its Class ZZ Minus designation makes it appropriate for NoGo functional inspection as well as for setting and checking micrometers, verniers, and other measuring devices. The 21.72 mm diameter and 2-inch overall length make it compatible with standard gage handle sets used in dimensional inspection workflows across general manufacturing and precision machining environments.

Key Features

• Class ZZ Minus tolerance classification for NoGo inspection applications
• 21.72 mm nominal diameter with 0.00508 mm tolerance for close-tolerance verification
• Steel construction with 10 micro surface finish for consistent contact and wear resistance
• Includes Certificate of Accuracy with NIST Traceability for calibrated inspection use
• 2-inch overall length compatible with standard plug gage handle sets
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for use in standard plug gage handle sets for NoGo inspection of machined bores and cylindrical features. Also compatible with applications requiring setting of micrometers, verniers, and similar dimensional measuring devices.

Installation Notes

Pin gages are handled and used by quality control technicians and machinists in inspection environments. Insert the gage into a compatible handle before use and ensure hands are clean or gloves are worn to prevent corrosion from skin contact. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity. Do not force the gage into a bore; if resistance is encountered, verify the bore size with an alternate method before proceeding.