Vermont Gage 111339650 Class Zz Plus Plug Gage 0.3965 in

Product Description

The VERMONT GAGE 111339650 is a Class ZZ Plus plug gage used to perform go inspection checks on holes, bores, and internal features. It measures a nominal diameter of 0.3965 inches with a tolerance of 0.0002 inches, making it suitable for high-precision dimensional verification in machining and manufacturing environments. The gage is manufactured from tool steel and features a 10 microfinish surface, which reduces wear and ensures consistent, accurate readings over repeated use. A Certificate of Accuracy with NIST traceability is included, supporting quality documentation requirements. Machinists, toolroom technicians, and quality control inspectors are the primary users of this instrument.

This plug gage is intended for go inspection applications where precise hole diameter verification is required. It is also suitable for setting and checking micrometers, verniers, and other measuring devices. Typical use environments include production floors, toolrooms, and inspection labs in industries such as aerospace, automotive, and general metalworking. The 0.3965-inch diameter makes it appropriate for small-bore applications common in precision component manufacturing. Conformance to ASME B89.1 ensures the gage meets recognized dimensional measurement standards.

Key Features

• Class ZZ Plus tolerance grade with 0.0002-inch tolerance for precise go inspection
• 0.3965-inch nominal measurement diameter for small-bore verification
• Tool steel construction for durability and resistance to wear
• 10 microfinish surface for consistent contact and extended service life
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Conforms to ASME B89.1 dimensional measurement standard

Compatibility

Designed for go inspection of holes and bores at 0.3965 inches nominal diameter, and for setting micrometers, verniers, and other measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and used by machinists and quality technicians — no power source or mechanical installation is required. Store the gage in its protective case when not in use to prevent surface damage or corrosion. Clean mating surfaces and the gage itself before use to avoid measurement errors caused by debris or oil buildup. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise accuracy.