Vermont Gage 111334450 Class Zz Plus Plug Gage 0.3445 in

Product Description

The VERMONT GAGE 111334450 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection work. It measures a nominal diameter of 0.3445 inches with a tolerance of 0.0002 inches and features a 10 microfinish surface on the gaging element. Overall length is 2.0 inches. Each unit ships with a Certificate of Accuracy that carries NIST traceability, making it suitable for use in quality-controlled environments where documented calibration is required. This gage is manufactured to ASME B89.1 standards, the governing specification for plain cylindrical plug and ring gages used in North American metrology practice.

This plug gage is used in go inspection applications to verify that a bored, drilled, reamed, or otherwise finished hole meets its lower tolerance limit. Typical settings include machine shops, manufacturing cells, incoming inspection stations, and toolroom environments. It is also suited for setting and verifying micrometers, verniers, and other measuring devices that require a certified reference standard at this diameter range. Machinists, quality technicians, and metrologists are the primary users.

Key Features

• Class ZZ Plus tolerance grade per ASME B89.1 for go inspection of finished bores
• 0.3445 inch nominal gaging diameter with 0.0002 inch tolerance
• 10 microfinish surface on the gaging member for accurate, repeatable contact
• Tool steel construction for wear resistance in production and inspection use
• Includes Certificate of Accuracy with NIST traceability for documented quality systems
• Suitable for setting micrometers, verniers, and comparable measuring instruments

Compatibility

Designed for go inspection of holes at a 0.3445 inch nominal diameter and for use as a reference standard when setting micrometers, verniers, and other measuring devices requiring a certified plug at this size.

Installation Notes

Plug gages are handled and stored by metrology or quality personnel, not installed in the field. Before use, clean the gaging surfaces with a lint-free cloth and a light instrument oil to prevent corrosion and debris interference. Never force the gage into a hole; if resistance is felt, the bore is undersize and should be returned for further machining. Store the gage in its protective case away from other tooling to preserve the microfinish and prevent dimensional damage.