Vermont Gage 112304190 Class Zz Plus Plug Gage 4.19mm

Product Description

The VERMONT GAGE 112304190 is a Class ZZ Plus plug gage designed for dimensional inspection of bored holes and machined features. It measures 4.19 mm in diameter and holds a tolerance of 0.00508 mm, making it appropriate for go-type inspection work where hole acceptance must be confirmed within tight limits. The gage body is machined from tool steel and carries a 10 microfinish surface finish. Overall length is 2.0000 inches. A Certificate of Accuracy with NIST traceability is included, supporting documentation requirements in calibrated inspection environments. Machinists, quality technicians, and tool room personnel use this gage as part of routine dimensional verification workflows.

This plug gage is suited for go inspection applications including verification of drilled, reamed, or bored holes in production and tool room settings. It is also referenced for setting micrometers, verniers, and other measuring devices that require a known physical reference. The Class ZZ Plus designation places it in the general-purpose inspection grade range, appropriate for in-process and final inspection at the bench or on the floor. It is commonly used in manufacturing environments where ASME B89.1 compliance is required for gage standards documentation.

Key Features

• 4.19 mm diameter with 0.00508 mm tolerance for precise go-type hole inspection
• 10 microfinish surface finish for accurate contact with measured bores
• Tool steel construction for durability in production inspection use
• Overall length of 2.0000 inches for standard handle compatibility
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 gage standards

Compatibility

Designed for use as a go plug gage for hole inspection and as a setting reference for micrometers, verniers, and other measuring devices. Suitable for any application requiring a Class ZZ Plus plug gage at 4.19 mm diameter per ASME B89.1.

Installation Notes

Plug gages are handled and stored by quality technicians and tool room personnel following established metrology practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into a bore; go gages should pass under the weight of the gage alone or with light hand pressure. Store in the provided case or a protected gage block tray away from temperature extremes to preserve calibration integrity.