Vermont Gage 112407490 Class Zz Minus Plug Pin Gage 7.49 Mm

Product Description

The VERMONT GAGE 112407490 is a Class ZZ minus plug pin gage machined from steel and used to perform NoGo inspection on bored, reamed, or drilled holes. It checks that a hole does not exceed its maximum allowable diameter, making it a standard tool in dimensional quality control. The gage measures 7.49 mm in diameter with a tolerance of 0.00508 mm, providing repeatable and traceable measurement results. Overall length is 2 inches. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming the gage meets Class ZZ minus specifications straight from the manufacturer.

This pin gage is suited for use in machine shops, manufacturing facilities, and inspection departments where hole diameter verification is required. It is commonly used alongside set micrometers, verniers, and other precision measuring devices to validate workpiece tolerances. The minus designation means the gage is ground to the low side of the nominal diameter, appropriate for NoGo functional inspection. Machinists, quality control technicians, and tool-and-die professionals rely on this style of gage for in-process and final inspection on ferrous and non-ferrous workpieces.

Key Features

• Class ZZ minus tolerance of 0.00508 mm for NoGo hole inspection
• Steel construction for durability and dimensional stability
• 10 microfinish surface coating for smooth, repeatable gage entry
• Includes Certificate of Accuracy with NIST traceability
• Compact 2-inch overall length for easy handling and storage

Compatibility

Designed for use with set micrometers, verniers, and other precision measuring devices in NoGo hole inspection applications. Suitable for standard Class ZZ minus plug gage setups in dimensional inspection workflows.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion and contamination of the precision surface. Before use, verify that the workpiece bore is free of chips, burrs, and coolant residue. Apply light gage oil when inserting the pin to protect both the gage and the workpiece finish. Store in a protective case away from other tooling to prevent nicking the ground surface.