Vermont Gage 112104640 Class Zz Plus Plug Gage 4.64mm

Product Description

The VERMONT GAGE 112104640 is a Class ZZ Plus plug gage machined from tool steel for dimensional inspection of bored holes and precision-machined features. It measures 4.64 mm in diameter and is held to a tolerance of 0.00508 mm, making it appropriate for Go inspection workflows where close-tolerance verification is required. The working surface carries a 10 microfinish rating, reducing measurement uncertainty caused by surface irregularities. Each gage ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO-compliant and AS9100-compliant quality systems. Machinists, quality technicians, and tool-room personnel are the typical end users.

This plug gage is suited for incoming inspection, in-process verification, and final acceptance checking in manufacturing environments. It is used with Go inspection routines on drilled, reamed, or bored holes where the nominal diameter is 4.64 mm. The 2.0000-inch overall length provides adequate handle grip for manual insertion. It is also compatible as a setting standard for micrometers, vernier calipers, and other bench-top measuring devices requiring a known reference diameter.

Key Features

• Class ZZ Plus tolerance grade: 0.00508 mm, suitable for tight-tolerance Go inspection
• 10 microfinish on gaging surfaces for consistent, repeatable contact
• Tool steel construction for wear resistance in production inspection use
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• 2.0000-inch overall length for comfortable single-hand use

Compatibility

Designed for Go inspection of 4.64 mm diameter features and for use as a setting reference with micrometers, verniers, and other precision measuring devices per the manufacturer application data.

Installation Notes

Plug gages require no permanent installation. Before use, clean the gage and the part bore with a lint-free cloth to remove oil, chips, and debris that could affect the reading. Apply light gage oil sparingly to extend surface life and prevent corrosion. Store the gage in its protective case when not in use and recalibrate on a schedule consistent with your quality management system and ASME B89.1 guidelines.