Vermont Gage 112305490 Class Zz Plus Plug Gage 5.49 Mm

Product Description

The VERMONT GAGE 112305490 is a Class ZZ Plus plug gage designed for precision hole inspection in machining and metrology applications. The gage measures a nominal diameter of 5.49 mm with a tolerance of 0.00508 mm, making it suitable for go inspection checks where tight dimensional control is required. Constructed from tool steel and finished to a 10 microfinish, it delivers consistent, repeatable results. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Machinists, quality technicians, and toolroom personnel use this gage as part of regular in-process and final inspection routines.

This plug gage is used in manufacturing environments where bore diameter verification is critical to part acceptance. It is appropriate for go inspection of holes drilled, reamed, or bored to 5.49 mm nominal. The gage also serves as a reference standard for setting micrometers, verniers, and other measuring devices. It is suited to both production floor inspection and metrology lab use, handling small-diameter work where Class ZZ Plus tolerances are specified by the inspection plan.

Key Features

• 5.49 mm nominal diameter with 0.00508 mm tolerance for precise go inspection
• Class ZZ Plus classification per ASME B89.1
• Tool steel construction for durability and wear resistance
• 10 microfinish surface for consistent gage contact
• Includes Certificate of Accuracy with NIST Traceability
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of 5.49 mm diameter bores and for use as a reference standard with micrometers, verniers, and other measuring devices where a Class ZZ Plus plug gage is specified.

Installation Notes

This gage is handled and used by quality technicians and machinists; no installation in the traditional sense applies. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Do not force the gage into a bore - if resistance is felt during go inspection, the bore is undersize and the part should be reworked. Clean the gage and bore contact surfaces before each use to ensure accurate measurement.