Vermont Gage 112404730 Class Zz Minus Plug Pin Gage 4.73mm

Product Description

The VERMONT GAGE 112404730 is a Class ZZ Minus plug pin gage machined from steel and used to perform NoGo inspection on bored holes, drilled passages, and precision-machined features. It measures 4.73 mm in diameter with a tolerance of 0.00508 mm, making it suitable for applications where tight dimensional verification is required. The overall length is 2 inches, giving the technician adequate grip and clearance during inspection. Each gage ships with a Certificate of Accuracy traceable to NIST, supporting quality management documentation requirements. Machinists, toolroom technicians, and quality control inspectors use this type of gage in production and incoming inspection workflows.

This gage is used in NoGo inspection routines to verify that a machined bore or hole does not exceed its maximum allowable size. It is also appropriate for setting and verifying micrometers, verniers, and other measuring devices that require a known reference diameter. The Class ZZ designation indicates it meets the tolerance standard for general inspection use. Typical applications include metalworking shops, precision manufacturing facilities, and quality labs where repeatable dimensional checks are performed on steel and non-ferrous components.

Key Features

• Class ZZ Minus tolerance class for NoGo inspection use
• 4.73 mm measurement diameter with 0.00508 mm tolerance
• Overall length of 2 inches for standard hand-held use
• Steel construction for durability and dimensional stability
• 10 microfinish coating for consistent gage surface contact
• Includes Certificate of Accuracy with NIST traceability for quality records

Compatibility

Designed for use in NoGo inspection routines and for setting micrometers, verniers, and other measuring devices that require a 4.73 mm reference standard.

Installation Notes

Pin gages are handled and stored with care to prevent surface damage that would affect measurement accuracy. Keep the gage clean and lightly oiled when not in use to prevent corrosion. Do not force the gage into a bore; if it does not enter freely under light hand pressure, the feature is within tolerance for a NoGo check. Periodic recalibration against a NIST-traceable reference is recommended to maintain measurement integrity.