Vermont Gage 112305550 Class Zz Plus Plug Gage 5.55mm

Product Description

The VERMONT GAGE 112305550 is a Class ZZ Plus plug gage designed for go inspection of bored, drilled, or reamed holes with a nominal diameter of 5.55 mm. Manufactured from tool steel, this gage provides a tolerance of 0.00508 mm and a 10 microfinish surface finish, giving it the dimensional precision required for verifying hole size acceptance in production and quality-control environments. Each unit ships with a Certificate of Accuracy that carries NIST traceability, meeting the documentation requirements of most calibration and quality programs. Licensed metrologists, machinists, and quality technicians use this gage as part of go/no-go inspection workflows.

This plug gage is used in machine shops, manufacturing facilities, and metrology labs where hole diameter acceptance must be verified to tight tolerances. It is also suited for setting micrometers, verniers, and other comparative measuring devices to a known reference diameter. The 5.55 mm size covers applications in precision component manufacturing where standard drill or reamer sizing falls in that range. Its compact overall length of 2.0000 inches makes it easy to handle in bench inspection setups.

Key Features

• Class ZZ Plus tolerance grade - 0.00508 mm tolerance for precise go inspection
• 10 microfinish surface finish for repeatable, low-wear gaging contact
• Tool steel construction for durability in production inspection use
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 standards
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of holes with a nominal diameter of 5.55 mm. Also compatible with use as a reference setting standard for micrometers, verniers, and other precision measuring devices as stated in the product application data.

Installation Notes

Plug gages are handled and used by quality technicians and machinists - no installation in the traditional sense is required. Store the gage in a clean, dry environment and handle it with clean cotton gloves or equivalent to prevent corrosion from skin contact. Clean gaging surfaces before each use and inspect for nicks or wear that could affect measurement accuracy. Calibration intervals should follow your facility quality program and any applicable ISO or AS9100 requirements.