Vermont Gage 111337950 Class Zz Plus Plug Gage 0.3795 in

Product Description

The VERMONT GAGE 111337950 is a Class ZZ Plus plug gage manufactured from tool steel for dimensional go inspection of bored holes and machined features. It measures a nominal diameter of 0.3795 inches with a tolerance of 0.0002 inches and a 10 microfinish surface finish, delivering consistent, repeatable results in precision measurement applications. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming conformance to ASME B89.1 standards. Machinists, quality control technicians, and tool room personnel use this gage to verify that a hole or bore has been produced within its specified tolerance before a part advances in production.

This plug gage is suited for incoming inspection, in-process quality checks, and final acceptance inspection in machine shops, manufacturing facilities, and tool rooms. It is compatible with go inspection workflows and can be used alongside set micrometers, vernier calipers, and other precision measuring devices to establish or verify measurement references. The 0.3795-inch diameter makes it appropriate for tight-tolerance bore verification where Class ZZ Plus accuracy is specified by the drawing or quality plan.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-precision go inspection
• 10 microfinish surface finish for consistent gage-to-bore contact
• Tool steel construction for wear resistance and long service life
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• Overall length of 2.0 inches for comfortable single-hand use

Compatibility

Designed for use in go inspection of holes and bores at 0.3795 inches nominal diameter, and for setting or verifying micrometers, verniers, and other measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and stored by metrology or quality control personnel, not installed in a mechanical system. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Never force the gage into a bore; a go gage should pass through a conforming hole under its own weight or with light hand pressure. Periodically re-verify the gage against its calibration certificate interval to maintain NIST-traceable accuracy.