Vermont Gage 112221340 Class Zz Minus Plug Pin Gage 21.34mm

Product Description

The VERMONT GAGE 112221340 is a Class ZZ Minus plug pin gage machined from steel and used to verify that a bore or hole does not exceed its maximum allowable size. This is a NoGo gage, meaning it should not pass through an acceptable feature. With a measurement diameter of 21.34 mm and a tolerance of 0.00508 mm, it delivers the precision required for tight-tolerance inspection work. Each gage ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements in regulated manufacturing and inspection environments. Machinists, quality control technicians, and tool-room professionals rely on this type of gage for fast, repeatable attribute inspection.

This plug pin gage is suited for dimensional inspection applications where bore diameter must be held to close tolerances. It is commonly used alongside micrometers, verniers, and other measuring devices to verify NoGo conditions on machined parts in production or incoming inspection settings. The 21.34 mm diameter and 2-inch overall length make it a practical bench or floor-inspection tool for both job shop and high-volume manufacturing environments.

Key Features

• Class ZZ Minus classification for NoGo bore inspection
• 21.34 mm measurement diameter with 0.00508 mm tolerance
• 2-inch overall length for easy single-hand handling
• Steel construction for durability and dimensional stability
• 10 micro coating finish to protect gage surface
• Includes Certificate of Accuracy with NIST traceability for quality records

Compatibility

Designed for NoGo attribute inspection and compatible for use with micrometers, verniers, and other precision measuring devices requiring a 21.34 mm diameter reference standard.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists following standard metrology practices. Always clean the gage and workpiece bore before use to prevent contamination from affecting readings. Store the gage in its protective case when not in use to avoid surface damage or corrosion. Never force a NoGo gage through a feature; if resistance is met, the part is within tolerance and no additional force should be applied.