Vermont Gage 112403190 Class Zz Minus Plug Pin Gage 3.19mm

Product Description

The VERMONT GAGE 112403190 is a Class ZZ minus plug pin gage designed for precision dimensional inspection. It measures 3.19 mm in diameter with a tolerance of 0.00508 mm, making it suitable for NoGo go/no-go inspection applications. The gage is machined from steel and features a 10 microfinish surface coating for consistent, repeatable contact. Overall length is 2 inches. Each unit ships with a Certificate of Accuracy traceable to NIST standards. Metrology technicians, quality control inspectors, and precision machinists use this type of gage to verify bore and hole dimensions in production and inspection environments.

This plug pin gage is used in NoGo inspection applications to confirm that a bore or hole does not exceed its maximum allowable size. It is also suited for setting and verifying micrometers, verniers, and other measuring devices that require a known reference diameter. Typical applications include incoming inspection, in-process quality checks, and calibration workflows in manufacturing facilities, machine shops, and metrology labs. The 3.19 mm diameter addresses precision small-bore inspection requirements common in close-tolerance machining and assembly operations.

Key Features

• Class ZZ minus tolerance: 0.00508 mm for precise NoGo inspection
• 3.19 mm diameter, 2-inch overall length for easy handling in tight inspection setups
• Steel construction with 10 microfinish surface coating for repeatable, accurate contact
• Includes Certificate of Accuracy with NIST traceability for documented calibration compliance
• Suitable for setting micrometers, verniers, and other reference-dependent measuring devices

Compatibility

Designed for use as a NoGo plug pin gage reference in go/no-go inspection setups and as a setting reference for micrometers, verniers, and comparable measuring instruments requiring a 3.19 mm diameter standard.

Installation Notes

This gage is handled and used by metrology technicians and quality control personnel. Store the gage in its protective case when not in use to prevent damage to the precision-ground surface. Clean contact surfaces with a lint-free cloth before use to avoid measurement error from debris or oils. Do not force the gage into a bore; improper insertion can damage both the gage and the workpiece.