Vermont Gage 112421570 Class Zz Minus Plug Pin Gage 21.57mm

Product Description

The VERMONT GAGE 112421570 is a Class ZZ Minus plug pin gage machined to a 21.57 mm diameter with a tolerance of 0.00508 mm. It 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 workflow. The gage is manufactured from steel and ships with a Certificate of Accuracy traceable to NIST, confirming that the dimensional specification has been independently verified. Licensed metrologists, quality technicians, and precision machinists rely on this type of gage for fast, repeatable attribute inspection on the shop floor or in the inspection room.

This plug pin gage is suited for NoGo inspection of holes and bores measured at 21.57 mm. It is also used as a setting standard for micrometers, verniers, and other measuring devices requiring a known reference diameter. The gage is appropriate for both production-line attribute inspection and tool-room calibration tasks in manufacturing environments where tight dimensional control is required.

Key Features

• Class ZZ Minus tolerance class: 0.00508 mm tolerance for NoGo attribute inspection
• 21.57 mm measurement diameter machined from steel for durability and dimensional stability
• Overall length of 2 inches for comfortable single-hand use during inspection
• Includes Certificate of Accuracy with NIST traceability for documented quality assurance
• Suitable as a setting reference for micrometers, verniers, and other precision measuring instruments

Compatibility

Designed for use in NoGo hole and bore inspection applications requiring a 21.57 mm plug gage, and as a setting standard for micrometers, verniers, and other measuring devices.

Installation Notes

Plug pin gages are handled and used by quality technicians and precision inspection personnel. Clean the gage and the part bore before use to prevent contamination from affecting the measurement result. Store the gage in its protective case when not in use to prevent nicks, corrosion, or dimensional damage. Do not force the gage into a bore; resistance indicates the hole is at or below the minimum allowable size.