Vermont Gage 111221800 Class Zz Minus Plug Pin Gage 0.218 in

Product Description

The VERMONT GAGE 111221800 is a Class ZZ Minus plug pin gage sized at 0.2180 inches in diameter, manufactured from steel for dimensional inspection work. This single-ended pin gage is used to verify that a hole or bore does not exceed its maximum allowable size, functioning as a NoGo member in a go/no-go inspection routine. Each unit ships with a Certificate of Accuracy carrying NIST traceability, confirming the gage meets the stated tolerance of plus or minus 0.0002 inches. The 10 microfinish surface treatment supports accurate, repeatable contact with the workpiece. Machinists, quality control technicians, and tool-and-die tradespeople rely on this type of gage for in-process and final inspection on the shop floor.

This gage is suited for use in manufacturing and machining environments where tight bore tolerances must be verified quickly and reliably. Beyond hole inspection, the 111221800 is appropriate for setting and checking micrometers, verniers, and other measuring devices that require a traceable reference standard. At 2 inches in overall length, it fits comfortably in a standard pin gage handle. It is packaged individually and sold in single-unit quantities, making it practical for adding a single size to an existing gage set or replacing a worn member.

Key Features

• Class ZZ Minus tolerance specification for NoGo inspection applications
• 0.2180 inch diameter with a tolerance of 0.0002 inches
• Steel construction with 10 microfinish surface for repeatable contact
• Includes Certificate of Accuracy with NIST traceability
• 2 inch overall length, compatible with standard pin gage handles
• Suitable for setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed as a NoGo plug pin gage for use in standard pin gage handle systems requiring a 0.2180 inch diameter member. Also used as a setting reference for micrometers, verniers, and other precision measuring devices.

Installation Notes

Pin gages are handled and used by quality control technicians and machinists. Keep the gage clean and lightly oiled when stored to prevent corrosion on the steel surface. Insert the pin gage into the bore with steady, light hand pressure only — never force it, as this can damage both the gage and the workpiece. Store in a protective case away from other tooling to preserve the surface finish and dimensional integrity.